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Finding the Fourth Proportional to 257,347.72, 386,073.12 and 88,874.20

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Solution

The fourth proportional to 257,347.72, 386,073.12 and 88,874.20 is: 133,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,347.72 : 386,073.12 = 88,874.20 : x
  2. Step 2: Convert to fraction form
    257,347.72/386,073.12 = 88,874.20/x
  3. Step 3: Cross multiply
    257,347.72x = 386,073.12 × 88,874.20
  4. Step 4: Simplify right side
    257,347.72x = 34,311,939,681.50
  5. Step 5: Solve for x
    x = 34,311,939,681.50/257,347.72
  6. Step 6: Final answer
    x = 133,329.10

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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.