Home / 221,218,486,904.76-305,278,263,012.90-123,561,553,018.80

Finding the Fourth Proportional to 221,218,486,904.76, 305,278,263,012.90 and 123,561,553,018.80

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Solution

The fourth proportional to 221,218,486,904.76, 305,278,263,012.90 and 123,561,553,018.80 is: 170,513,128,484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,218,486,904.76 : 305,278,263,012.90 = 123,561,553,018.80 : x
  2. Step 2: Convert to fraction form
    221,218,486,904.76/305,278,263,012.90 = 123,561,553,018.80/x
  3. Step 3: Cross multiply
    221,218,486,904.76x = 305,278,263,012.90 × 123,561,553,018.80
  4. Step 4: Simplify right side
    221,218,486,904.76x = 37,720,656,280,755,619,495,936
  5. Step 5: Solve for x
    x = 37,720,656,280,755,619,495,936/221,218,486,904.76
  6. Step 6: Final answer
    x = 170,513,128,484.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.