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Finding the Fourth Proportional to 257,499.70, 386,249.55 and 247,002.10

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Solution

The fourth proportional to 257,499.70, 386,249.55 and 247,002.10 is: 370,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,499.70 : 386,249.55 = 247,002.10 : x
  2. Step 2: Convert to fraction form
    257,499.70/386,249.55 = 247,002.10/x
  3. Step 3: Cross multiply
    257,499.70x = 386,249.55 × 247,002.10
  4. Step 4: Simplify right side
    257,499.70x = 95,404,449,974.06
  5. Step 5: Solve for x
    x = 95,404,449,974.06/257,499.70
  6. Step 6: Final answer
    x = 370,503.15

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.