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Finding the Fourth Proportional to 442,820.32, 611,105.52 and 251,861.20

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Solution

The fourth proportional to 442,820.32, 611,105.52 and 251,861.20 is: 347,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,820.32 : 611,105.52 = 251,861.20 : x
  2. Step 2: Convert to fraction form
    442,820.32/611,105.52 = 251,861.20/x
  3. Step 3: Cross multiply
    442,820.32x = 611,105.52 × 251,861.20
  4. Step 4: Simplify right side
    442,820.32x = 153,913,769,593.82
  5. Step 5: Solve for x
    x = 153,913,769,593.82/442,820.32
  6. Step 6: Final answer
    x = 347,576.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.