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Finding the Fourth Proportional to 332,459.78, 498,689.70 and 83,141.78

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Solution

The fourth proportional to 332,459.78, 498,689.70 and 83,141.78 is: 124,712.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,459.78 : 498,689.70 = 83,141.78 : x
  2. Step 2: Convert to fraction form
    332,459.78/498,689.70 = 83,141.78/x
  3. Step 3: Cross multiply
    332,459.78x = 498,689.70 × 83,141.78
  4. Step 4: Simplify right side
    332,459.78x = 41,461,949,325.67
  5. Step 5: Solve for x
    x = 41,461,949,325.67/332,459.78
  6. Step 6: Final answer
    x = 124,712.68

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Double scale
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Similar ratio
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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.