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Finding the Fourth Proportional to 368,456.85, 552,939.08 and 128,572.11

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Solution

The fourth proportional to 368,456.85, 552,939.08 and 128,572.11 is: 192,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,456.85 : 552,939.08 = 128,572.11 : x
  2. Step 2: Convert to fraction form
    368,456.85/552,939.08 = 128,572.11/x
  3. Step 3: Cross multiply
    368,456.85x = 552,939.08 × 128,572.11
  4. Step 4: Simplify right side
    368,456.85x = 71,092,543,574.20
  5. Step 5: Solve for x
    x = 71,092,543,574.20/368,456.85
  6. Step 6: Final answer
    x = 192,946.73

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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.