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Finding the Fourth Proportional to 488,647.20, 732,776.40 and 172,941.60

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Solution

The fourth proportional to 488,647.20, 732,776.40 and 172,941.60 is: 259,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,647.20 : 732,776.40 = 172,941.60 : x
  2. Step 2: Convert to fraction form
    488,647.20/732,776.40 = 172,941.60/x
  3. Step 3: Cross multiply
    488,647.20x = 732,776.40 × 172,941.60
  4. Step 4: Simplify right side
    488,647.20x = 126,727,523,058.24
  5. Step 5: Solve for x
    x = 126,727,523,058.24/488,647.20
  6. Step 6: Final answer
    x = 259,343.60

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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.