Home / 458,387.20-687,579.18-142,844.32

Finding the Fourth Proportional to 458,387.20, 687,579.18 and 142,844.32

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Solution

The fourth proportional to 458,387.20, 687,579.18 and 142,844.32 is: 214,265.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,387.20 : 687,579.18 = 142,844.32 : x
  2. Step 2: Convert to fraction form
    458,387.20/687,579.18 = 142,844.32/x
  3. Step 3: Cross multiply
    458,387.20x = 687,579.18 × 142,844.32
  4. Step 4: Simplify right side
    458,387.20x = 98,216,780,413.26
  5. Step 5: Solve for x
    x = 98,216,780,413.26/458,387.20
  6. Step 6: Final answer
    x = 214,265.98

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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.