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Finding the Fourth Proportional to 371,439, 557,379.86 and 134,800.16

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Solution

The fourth proportional to 371,439, 557,379.86 and 134,800.16 is: 202,280.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,439 : 557,379.86 = 134,800.16 : x
  2. Step 2: Convert to fraction form
    371,439/557,379.86 = 134,800.16/x
  3. Step 3: Cross multiply
    371,439x = 557,379.86 × 134,800.16
  4. Step 4: Simplify right side
    371,439x = 75,134,890,847.88
  5. Step 5: Solve for x
    x = 75,134,890,847.88/371,439
  6. Step 6: Final answer
    x = 202,280.57

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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.