Home / 458,422.20-687,637.98-138,576.60

Finding the Fourth Proportional to 458,422.20, 687,637.98 and 138,576.60

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Solution

The fourth proportional to 458,422.20, 687,637.98 and 138,576.60 is: 207,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,422.20 : 687,637.98 = 138,576.60 : x
  2. Step 2: Convert to fraction form
    458,422.20/687,637.98 = 138,576.60/x
  3. Step 3: Cross multiply
    458,422.20x = 687,637.98 × 138,576.60
  4. Step 4: Simplify right side
    458,422.20x = 95,290,533,299.27
  5. Step 5: Solve for x
    x = 95,290,533,299.27/458,422.20
  6. Step 6: Final answer
    x = 207,866.31

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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.