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Finding the Fourth Proportional to 318,633.92, 478,028.80 and 97,017.92

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Solution

The fourth proportional to 318,633.92, 478,028.80 and 97,017.92 is: 145,550.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,633.92 : 478,028.80 = 97,017.92 : x
  2. Step 2: Convert to fraction form
    318,633.92/478,028.80 = 97,017.92/x
  3. Step 3: Cross multiply
    318,633.92x = 478,028.80 × 97,017.92
  4. Step 4: Simplify right side
    318,633.92x = 46,377,359,876.10
  5. Step 5: Solve for x
    x = 46,377,359,876.10/318,633.92
  6. Step 6: Final answer
    x = 145,550.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.