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Finding the Fourth Proportional to 478,423.43, 717,385.96 and 225,636.04

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Solution

The fourth proportional to 478,423.43, 717,385.96 and 225,636.04 is: 338,336.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,423.43 : 717,385.96 = 225,636.04 : x
  2. Step 2: Convert to fraction form
    478,423.43/717,385.96 = 225,636.04/x
  3. Step 3: Cross multiply
    478,423.43x = 717,385.96 × 225,636.04
  4. Step 4: Simplify right side
    478,423.43x = 161,868,124,808.44
  5. Step 5: Solve for x
    x = 161,868,124,808.44/478,423.43
  6. Step 6: Final answer
    x = 338,336.54

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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.