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Finding the Fourth Proportional to 322,079.20, 482,626.16 and 134,988.64

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Solution

The fourth proportional to 322,079.20, 482,626.16 and 134,988.64 is: 202,276.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,079.20 : 482,626.16 = 134,988.64 : x
  2. Step 2: Convert to fraction form
    322,079.20/482,626.16 = 134,988.64/x
  3. Step 3: Cross multiply
    322,079.20x = 482,626.16 × 134,988.64
  4. Step 4: Simplify right side
    322,079.20x = 65,149,048,966.82
  5. Step 5: Solve for x
    x = 65,149,048,966.82/322,079.20
  6. Step 6: Final answer
    x = 202,276.49

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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.