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Finding the Fourth Proportional to 391,751.73, 540,729.49 and 230,700.20

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Solution

The fourth proportional to 391,751.73, 540,729.49 and 230,700.20 is: 318,432.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,751.73 : 540,729.49 = 230,700.20 : x
  2. Step 2: Convert to fraction form
    391,751.73/540,729.49 = 230,700.20/x
  3. Step 3: Cross multiply
    391,751.73x = 540,729.49 × 230,700.20
  4. Step 4: Simplify right side
    391,751.73x = 124,746,398,641.06
  5. Step 5: Solve for x
    x = 124,746,398,641.06/391,751.73
  6. Step 6: Final answer
    x = 318,432.28

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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.