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Finding the Fourth Proportional to 478,257.30, 660,024.92 and 263,397.31

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Solution

The fourth proportional to 478,257.30, 660,024.92 and 263,397.31 is: 363,504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,257.30 : 660,024.92 = 263,397.31 : x
  2. Step 2: Convert to fraction form
    478,257.30/660,024.92 = 263,397.31/x
  3. Step 3: Cross multiply
    478,257.30x = 660,024.92 × 263,397.31
  4. Step 4: Simplify right side
    478,257.30x = 173,848,785,493.92
  5. Step 5: Solve for x
    x = 173,848,785,493.92/478,257.30
  6. Step 6: Final answer
    x = 363,504.72

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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.