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Finding the Fourth Proportional to 272,079.24, 408,053.24 and 85,090.74

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Solution

The fourth proportional to 272,079.24, 408,053.24 and 85,090.74 is: 127,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,079.24 : 408,053.24 = 85,090.74 : x
  2. Step 2: Convert to fraction form
    272,079.24/408,053.24 = 85,090.74/x
  3. Step 3: Cross multiply
    272,079.24x = 408,053.24 × 85,090.74
  4. Step 4: Simplify right side
    272,079.24x = 34,721,552,151.00
  5. Step 5: Solve for x
    x = 34,721,552,151.00/272,079.24
  6. Step 6: Final answer
    x = 127,615.59

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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.