Home / 215,452.57-297,336.81-129,437.86

Finding the Fourth Proportional to 215,452.57, 297,336.81 and 129,437.86

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Solution

The fourth proportional to 215,452.57, 297,336.81 and 129,437.86 is: 178,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,452.57 : 297,336.81 = 129,437.86 : x
  2. Step 2: Convert to fraction form
    215,452.57/297,336.81 = 129,437.86/x
  3. Step 3: Cross multiply
    215,452.57x = 297,336.81 × 129,437.86
  4. Step 4: Simplify right side
    215,452.57x = 38,486,640,385.63
  5. Step 5: Solve for x
    x = 38,486,640,385.63/215,452.57
  6. Step 6: Final answer
    x = 178,631.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.