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Finding the Fourth Proportional to 392,371, 588,561.96 and 111,888.25

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Solution

The fourth proportional to 392,371, 588,561.96 and 111,888.25 is: 167,833.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,371 : 588,561.96 = 111,888.25 : x
  2. Step 2: Convert to fraction form
    392,371/588,561.96 = 111,888.25/x
  3. Step 3: Cross multiply
    392,371x = 588,561.96 × 111,888.25
  4. Step 4: Simplify right side
    392,371x = 65,853,167,720.97
  5. Step 5: Solve for x
    x = 65,853,167,720.97/392,371
  6. Step 6: Final answer
    x = 167,833.93

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1.5x scale

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.