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Finding the Fourth Proportional to 347,363.27, 520,772.70 and 137,158.55

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Solution

The fourth proportional to 347,363.27, 520,772.70 and 137,158.55 is: 205,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,363.27 : 520,772.70 = 137,158.55 : x
  2. Step 2: Convert to fraction form
    347,363.27/520,772.70 = 137,158.55/x
  3. Step 3: Cross multiply
    347,363.27x = 520,772.70 × 137,158.55
  4. Step 4: Simplify right side
    347,363.27x = 71,428,425,807.72
  5. Step 5: Solve for x
    x = 71,428,425,807.72/347,363.27
  6. Step 6: Final answer
    x = 205,630.34

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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.