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Finding the Fourth Proportional to 257,224.40, 385,836.60 and 88,744.40

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Solution

The fourth proportional to 257,224.40, 385,836.60 and 88,744.40 is: 133,116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,224.40 : 385,836.60 = 88,744.40 : x
  2. Step 2: Convert to fraction form
    257,224.40/385,836.60 = 88,744.40/x
  3. Step 3: Cross multiply
    257,224.40x = 385,836.60 × 88,744.40
  4. Step 4: Simplify right side
    257,224.40x = 34,240,837,565.04
  5. Step 5: Solve for x
    x = 34,240,837,565.04/257,224.40
  6. Step 6: Final answer
    x = 133,116.60

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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.