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Finding the Fourth Proportional to 415,989.65, 624,077.84 and 131,697.20

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Solution

The fourth proportional to 415,989.65, 624,077.84 and 131,697.20 is: 197,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,989.65 : 624,077.84 = 131,697.20 : x
  2. Step 2: Convert to fraction form
    415,989.65/624,077.84 = 131,697.20/x
  3. Step 3: Cross multiply
    415,989.65x = 624,077.84 × 131,697.20
  4. Step 4: Simplify right side
    415,989.65x = 82,189,305,011.76
  5. Step 5: Solve for x
    x = 82,189,305,011.76/415,989.65
  6. Step 6: Final answer
    x = 197,575.36

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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.