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Finding the Fourth Proportional to 392,876.10, 542,154.60 and 240,170.04

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Solution

The fourth proportional to 392,876.10, 542,154.60 and 240,170.04 is: 331,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,876.10 : 542,154.60 = 240,170.04 : x
  2. Step 2: Convert to fraction form
    392,876.10/542,154.60 = 240,170.04/x
  3. Step 3: Cross multiply
    392,876.10x = 542,154.60 × 240,170.04
  4. Step 4: Simplify right side
    392,876.10x = 130,209,291,968.18
  5. Step 5: Solve for x
    x = 130,209,291,968.18/392,876.10
  6. Step 6: Final answer
    x = 331,425.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.