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Finding the Fourth Proportional to 272,347.52, 408,521.31 and 72,668.64

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Solution

The fourth proportional to 272,347.52, 408,521.31 and 72,668.64 is: 109,002.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,347.52 : 408,521.31 = 72,668.64 : x
  2. Step 2: Convert to fraction form
    272,347.52/408,521.31 = 72,668.64/x
  3. Step 3: Cross multiply
    272,347.52x = 408,521.31 × 72,668.64
  4. Step 4: Simplify right side
    272,347.52x = 29,686,689,268.17
  5. Step 5: Solve for x
    x = 29,686,689,268.17/272,347.52
  6. Step 6: Final answer
    x = 109,002.97

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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.