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Finding the Fourth Proportional to 478,167.60, 659,875.86 and 263,315.28

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Solution

The fourth proportional to 478,167.60, 659,875.86 and 263,315.28 is: 363,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,167.60 : 659,875.86 = 263,315.28 : x
  2. Step 2: Convert to fraction form
    478,167.60/659,875.86 = 263,315.28/x
  3. Step 3: Cross multiply
    478,167.60x = 659,875.86 × 263,315.28
  4. Step 4: Simplify right side
    478,167.60x = 173,755,396,841.14
  5. Step 5: Solve for x
    x = 173,755,396,841.14/478,167.60
  6. Step 6: Final answer
    x = 363,377.60

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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.