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Finding the Fourth Proportional to 425,468.97, 638,279.35 and 141,176.57

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Solution

The fourth proportional to 425,468.97, 638,279.35 and 141,176.57 is: 211,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,468.97 : 638,279.35 = 141,176.57 : x
  2. Step 2: Convert to fraction form
    425,468.97/638,279.35 = 141,176.57/x
  3. Step 3: Cross multiply
    425,468.97x = 638,279.35 × 141,176.57
  4. Step 4: Simplify right side
    425,468.97x = 90,110,085,790.49
  5. Step 5: Solve for x
    x = 90,110,085,790.49/425,468.97
  6. Step 6: Final answer
    x = 211,790.03

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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.