Home / 427,793.56-642,321.14-238,623.52

Finding the Fourth Proportional to 427,793.56, 642,321.14 and 238,623.52

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Solution

The fourth proportional to 427,793.56, 642,321.14 and 238,623.52 is: 358,287.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,793.56 : 642,321.14 = 238,623.52 : x
  2. Step 2: Convert to fraction form
    427,793.56/642,321.14 = 238,623.52/x
  3. Step 3: Cross multiply
    427,793.56x = 642,321.14 × 238,623.52
  4. Step 4: Simplify right side
    427,793.56x = 153,272,931,397.21
  5. Step 5: Solve for x
    x = 153,272,931,397.21/427,793.56
  6. Step 6: Final answer
    x = 358,287.14

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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.