Home / 458,132.64-687,263.76-142,621.44

Finding the Fourth Proportional to 458,132.64, 687,263.76 and 142,621.44

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Solution

The fourth proportional to 458,132.64, 687,263.76 and 142,621.44 is: 213,952.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,132.64 : 687,263.76 = 142,621.44 : x
  2. Step 2: Convert to fraction form
    458,132.64/687,263.76 = 142,621.44/x
  3. Step 3: Cross multiply
    458,132.64x = 687,263.76 × 142,621.44
  4. Step 4: Simplify right side
    458,132.64x = 98,018,547,111.01
  5. Step 5: Solve for x
    x = 98,018,547,111.01/458,132.64
  6. Step 6: Final answer
    x = 213,952.33

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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.