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Finding the Fourth Proportional to 371,390.27, 557,122.25 and 134,751.40

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Solution

The fourth proportional to 371,390.27, 557,122.25 and 134,751.40 is: 202,140.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,390.27 : 557,122.25 = 134,751.40 : x
  2. Step 2: Convert to fraction form
    371,390.27/557,122.25 = 134,751.40/x
  3. Step 3: Cross multiply
    371,390.27x = 557,122.25 × 134,751.40
  4. Step 4: Simplify right side
    371,390.27x = 75,073,002,102.72
  5. Step 5: Solve for x
    x = 75,073,002,102.72/371,390.27
  6. Step 6: Final answer
    x = 202,140.47

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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.