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Finding the Fourth Proportional to 353,115.20, 529,672.80 and 187,227.20

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Solution

The fourth proportional to 353,115.20, 529,672.80 and 187,227.20 is: 280,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,115.20 : 529,672.80 = 187,227.20 : x
  2. Step 2: Convert to fraction form
    353,115.20/529,672.80 = 187,227.20/x
  3. Step 3: Cross multiply
    353,115.20x = 529,672.80 × 187,227.20
  4. Step 4: Simplify right side
    353,115.20x = 99,169,155,260.16
  5. Step 5: Solve for x
    x = 99,169,155,260.16/353,115.20
  6. Step 6: Final answer
    x = 280,840.80

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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.