Home / 457,967.20-687,015.60-142,391.20

Finding the Fourth Proportional to 457,967.20, 687,015.60 and 142,391.20

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Solution

The fourth proportional to 457,967.20, 687,015.60 and 142,391.20 is: 213,606.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,967.20 : 687,015.60 = 142,391.20 : x
  2. Step 2: Convert to fraction form
    457,967.20/687,015.60 = 142,391.20/x
  3. Step 3: Cross multiply
    457,967.20x = 687,015.60 × 142,391.20
  4. Step 4: Simplify right side
    457,967.20x = 97,824,975,702.72
  5. Step 5: Solve for x
    x = 97,824,975,702.72/457,967.20
  6. Step 6: Final answer
    x = 213,606.95

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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.