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Finding the Fourth Proportional to 502,711.20, 753,807.60 and 187,005.60

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Solution

The fourth proportional to 502,711.20, 753,807.60 and 187,005.60 is: 280,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,711.20 : 753,807.60 = 187,005.60 : x
  2. Step 2: Convert to fraction form
    502,711.20/753,807.60 = 187,005.60/x
  3. Step 3: Cross multiply
    502,711.20x = 753,807.60 × 187,005.60
  4. Step 4: Simplify right side
    502,711.20x = 140,966,242,522.56
  5. Step 5: Solve for x
    x = 140,966,242,522.56/502,711.20
  6. Step 6: Final answer
    x = 280,411.98

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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.