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Finding the Fourth Proportional to 488,563.30, 732,881.40 and 172,979.20

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Solution

The fourth proportional to 488,563.30, 732,881.40 and 172,979.20 is: 259,481.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,563.30 : 732,881.40 = 172,979.20 : x
  2. Step 2: Convert to fraction form
    488,563.30/732,881.40 = 172,979.20/x
  3. Step 3: Cross multiply
    488,563.30x = 732,881.40 × 172,979.20
  4. Step 4: Simplify right side
    488,563.30x = 126,773,238,266.88
  5. Step 5: Solve for x
    x = 126,773,238,266.88/488,563.30
  6. Step 6: Final answer
    x = 259,481.71

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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.