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Finding the Fourth Proportional to 331,752.80, 497,629.20 and 272,655.20

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Solution

The fourth proportional to 331,752.80, 497,629.20 and 272,655.20 is: 408,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,752.80 : 497,629.20 = 272,655.20 : x
  2. Step 2: Convert to fraction form
    331,752.80/497,629.20 = 272,655.20/x
  3. Step 3: Cross multiply
    331,752.80x = 497,629.20 × 272,655.20
  4. Step 4: Simplify right side
    331,752.80x = 135,681,189,051.84
  5. Step 5: Solve for x
    x = 135,681,189,051.84/331,752.80
  6. Step 6: Final answer
    x = 408,982.80

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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.