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Finding the Fourth Proportional to 478,349.26, 660,121.96 and 263,488.66

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Solution

The fourth proportional to 478,349.26, 660,121.96 and 263,488.66 is: 363,614.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,349.26 : 660,121.96 = 263,488.66 : x
  2. Step 2: Convert to fraction form
    478,349.26/660,121.96 = 263,488.66/x
  3. Step 3: Cross multiply
    478,349.26x = 660,121.96 × 263,488.66
  4. Step 4: Simplify right side
    478,349.26x = 173,934,650,676.97
  5. Step 5: Solve for x
    x = 173,934,650,676.97/478,349.26
  6. Step 6: Final answer
    x = 363,614.34

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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.