Home / 465,456.02-698,170.05-128,517.21

Finding the Fourth Proportional to 465,456.02, 698,170.05 and 128,517.21

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Solution

The fourth proportional to 465,456.02, 698,170.05 and 128,517.21 is: 192,771.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,456.02 : 698,170.05 = 128,517.21 : x
  2. Step 2: Convert to fraction form
    465,456.02/698,170.05 = 128,517.21/x
  3. Step 3: Cross multiply
    465,456.02x = 698,170.05 × 128,517.21
  4. Step 4: Simplify right side
    465,456.02x = 89,726,866,931.56
  5. Step 5: Solve for x
    x = 89,726,866,931.56/465,456.02
  6. Step 6: Final answer
    x = 192,771.96

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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.