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Finding the Fourth Proportional to 305,403.66, 421,310.88 and 182,812.41

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Solution

The fourth proportional to 305,403.66, 421,310.88 and 182,812.41 is: 252,193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,403.66 : 421,310.88 = 182,812.41 : x
  2. Step 2: Convert to fraction form
    305,403.66/421,310.88 = 182,812.41/x
  3. Step 3: Cross multiply
    305,403.66x = 421,310.88 × 182,812.41
  4. Step 4: Simplify right side
    305,403.66x = 77,020,857,332.02
  5. Step 5: Solve for x
    x = 77,020,857,332.02/305,403.66
  6. Step 6: Final answer
    x = 252,193.63

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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.