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Finding the Fourth Proportional to 478,354.29, 660,128.96 and 263,494.36

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Solution

The fourth proportional to 478,354.29, 660,128.96 and 263,494.36 is: 363,622.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,354.29 : 660,128.96 = 263,494.36 : x
  2. Step 2: Convert to fraction form
    478,354.29/660,128.96 = 263,494.36/x
  3. Step 3: Cross multiply
    478,354.29x = 660,128.96 × 263,494.36
  4. Step 4: Simplify right side
    478,354.29x = 173,940,253,214.55
  5. Step 5: Solve for x
    x = 173,940,253,214.55/478,354.29
  6. Step 6: Final answer
    x = 363,622.23

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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.