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Finding the Fourth Proportional to 498,425.44, 687,825.12 and 272,071.12

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Solution

The fourth proportional to 498,425.44, 687,825.12 and 272,071.12 is: 375,457.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,425.44 : 687,825.12 = 272,071.12 : x
  2. Step 2: Convert to fraction form
    498,425.44/687,825.12 = 272,071.12/x
  3. Step 3: Cross multiply
    498,425.44x = 687,825.12 × 272,071.12
  4. Step 4: Simplify right side
    498,425.44x = 187,137,350,762.53
  5. Step 5: Solve for x
    x = 187,137,350,762.53/498,425.44
  6. Step 6: Final answer
    x = 375,457.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.