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Finding the Fourth Proportional to 391,503.22, 540,248.84 and 230,327.15

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Solution

The fourth proportional to 391,503.22, 540,248.84 and 230,327.15 is: 317,836.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,503.22 : 540,248.84 = 230,327.15 : x
  2. Step 2: Convert to fraction form
    391,503.22/540,248.84 = 230,327.15/x
  3. Step 3: Cross multiply
    391,503.22x = 540,248.84 × 230,327.15
  4. Step 4: Simplify right side
    391,503.22x = 124,433,972,618.85
  5. Step 5: Solve for x
    x = 124,433,972,618.85/391,503.22
  6. Step 6: Final answer
    x = 317,836.39

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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.