Home / 387,898,522.11-535,299,819.12-211,686,517.89

Finding the Fourth Proportional to 387,898,522.11, 535,299,819.12 and 211,686,517.89

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Solution

The fourth proportional to 387,898,522.11, 535,299,819.12 and 211,686,517.89 is: 292,127,317.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,898,522.11 : 535,299,819.12 = 211,686,517.89 : x
  2. Step 2: Convert to fraction form
    387,898,522.11/535,299,819.12 = 211,686,517.89/x
  3. Step 3: Cross multiply
    387,898,522.11x = 535,299,819.12 × 211,686,517.89
  4. Step 4: Simplify right side
    387,898,522.11x = 113,315,754,736,659,632
  5. Step 5: Solve for x
    x = 113,315,754,736,659,632/387,898,522.11
  6. Step 6: Final answer
    x = 292,127,317.53

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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.