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Finding the Fourth Proportional to 386,775, 580,177.08 and 120,534.48

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Solution

The fourth proportional to 386,775, 580,177.08 and 120,534.48 is: 180,806.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,775 : 580,177.08 = 120,534.48 : x
  2. Step 2: Convert to fraction form
    386,775/580,177.08 = 120,534.48/x
  3. Step 3: Cross multiply
    386,775x = 580,177.08 × 120,534.48
  4. Step 4: Simplify right side
    386,775x = 69,931,342,645.72
  5. Step 5: Solve for x
    x = 69,931,342,645.72/386,775
  6. Step 6: Final answer
    x = 180,806.26

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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.