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Finding the Fourth Proportional to 488,066.80, 732,100.20 and 172,521.20

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Solution

The fourth proportional to 488,066.80, 732,100.20 and 172,521.20 is: 258,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,066.80 : 732,100.20 = 172,521.20 : x
  2. Step 2: Convert to fraction form
    488,066.80/732,100.20 = 172,521.20/x
  3. Step 3: Cross multiply
    488,066.80x = 732,100.20 × 172,521.20
  4. Step 4: Simplify right side
    488,066.80x = 126,302,805,024.24
  5. Step 5: Solve for x
    x = 126,302,805,024.24/488,066.80
  6. Step 6: Final answer
    x = 258,781.80

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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.