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Finding the Fourth Proportional to 231,637.80, 347,019.30 and 118,934.40

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Solution

The fourth proportional to 231,637.80, 347,019.30 and 118,934.40 is: 178,177.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,637.80 : 347,019.30 = 118,934.40 : x
  2. Step 2: Convert to fraction form
    231,637.80/347,019.30 = 118,934.40/x
  3. Step 3: Cross multiply
    231,637.80x = 347,019.30 × 118,934.40
  4. Step 4: Simplify right side
    231,637.80x = 41,272,532,233.92
  5. Step 5: Solve for x
    x = 41,272,532,233.92/231,637.80
  6. Step 6: Final answer
    x = 178,177.02

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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.