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Finding the Fourth Proportional to 488,617.70, 732,732.15 and 172,912.10

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Solution

The fourth proportional to 488,617.70, 732,732.15 and 172,912.10 is: 259,299.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,617.70 : 732,732.15 = 172,912.10 : x
  2. Step 2: Convert to fraction form
    488,617.70/732,732.15 = 172,912.10/x
  3. Step 3: Cross multiply
    488,617.70x = 732,732.15 × 172,912.10
  4. Step 4: Simplify right side
    488,617.70x = 126,698,254,794.02
  5. Step 5: Solve for x
    x = 126,698,254,794.02/488,617.70
  6. Step 6: Final answer
    x = 259,299.36

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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.