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Finding the Fourth Proportional to 482,962.40, 724,443.60 and 128,031.20

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Solution

The fourth proportional to 482,962.40, 724,443.60 and 128,031.20 is: 192,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,962.40 : 724,443.60 = 128,031.20 : x
  2. Step 2: Convert to fraction form
    482,962.40/724,443.60 = 128,031.20/x
  3. Step 3: Cross multiply
    482,962.40x = 724,443.60 × 128,031.20
  4. Step 4: Simplify right side
    482,962.40x = 92,751,383,440.32
  5. Step 5: Solve for x
    x = 92,751,383,440.32/482,962.40
  6. Step 6: Final answer
    x = 192,046.80

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1.5x scale

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.