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Finding the Fourth Proportional to 347,337.20, 520,876.20 and 136,931.60

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Solution

The fourth proportional to 347,337.20, 520,876.20 and 136,931.60 is: 205,346.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,337.20 : 520,876.20 = 136,931.60 : x
  2. Step 2: Convert to fraction form
    347,337.20/520,876.20 = 136,931.60/x
  3. Step 3: Cross multiply
    347,337.20x = 520,876.20 × 136,931.60
  4. Step 4: Simplify right side
    347,337.20x = 71,324,411,467.92
  5. Step 5: Solve for x
    x = 71,324,411,467.92/347,337.20
  6. Step 6: Final answer
    x = 205,346.31

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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.