Home / 457,928.16-687,008.88-142,387.80

Finding the Fourth Proportional to 457,928.16, 687,008.88 and 142,387.80

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Solution

The fourth proportional to 457,928.16, 687,008.88 and 142,387.80 is: 213,617.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,928.16 : 687,008.88 = 142,387.80 : x
  2. Step 2: Convert to fraction form
    457,928.16/687,008.88 = 142,387.80/x
  3. Step 3: Cross multiply
    457,928.16x = 687,008.88 × 142,387.80
  4. Step 4: Simplify right side
    457,928.16x = 97,821,683,003.66
  5. Step 5: Solve for x
    x = 97,821,683,003.66/457,928.16
  6. Step 6: Final answer
    x = 213,617.97

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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.