Home / 458,621.20-687,899.40-159,029.20

Finding the Fourth Proportional to 458,621.20, 687,899.40 and 159,029.20

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Solution

The fourth proportional to 458,621.20, 687,899.40 and 159,029.20 is: 238,532.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,621.20 : 687,899.40 = 159,029.20 : x
  2. Step 2: Convert to fraction form
    458,621.20/687,899.40 = 159,029.20/x
  3. Step 3: Cross multiply
    458,621.20x = 687,899.40 × 159,029.20
  4. Step 4: Simplify right side
    458,621.20x = 109,396,091,262.48
  5. Step 5: Solve for x
    x = 109,396,091,262.48/458,621.20
  6. Step 6: Final answer
    x = 238,532.57

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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.