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Finding the Fourth Proportional to 492,489.49, 738,678.82 and 132,686.92

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Solution

The fourth proportional to 492,489.49, 738,678.82 and 132,686.92 is: 199,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,489.49 : 738,678.82 = 132,686.92 : x
  2. Step 2: Convert to fraction form
    492,489.49/738,678.82 = 132,686.92/x
  3. Step 3: Cross multiply
    492,489.49x = 738,678.82 × 132,686.92
  4. Step 4: Simplify right side
    492,489.49x = 98,013,017,495.03
  5. Step 5: Solve for x
    x = 98,013,017,495.03/492,489.49
  6. Step 6: Final answer
    x = 199,015.45

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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.