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Finding the Fourth Proportional to 492,712.80, 739,069.20 and 177,128.70

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Solution

The fourth proportional to 492,712.80, 739,069.20 and 177,128.70 is: 265,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,712.80 : 739,069.20 = 177,128.70 : x
  2. Step 2: Convert to fraction form
    492,712.80/739,069.20 = 177,128.70/x
  3. Step 3: Cross multiply
    492,712.80x = 739,069.20 × 177,128.70
  4. Step 4: Simplify right side
    492,712.80x = 130,910,366,606.04
  5. Step 5: Solve for x
    x = 130,910,366,606.04/492,712.80
  6. Step 6: Final answer
    x = 265,693.05

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Similar ratio
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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.