Home / 315,862.27-435,890.17-172,622.33

Finding the Fourth Proportional to 315,862.27, 435,890.17 and 172,622.33

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Solution

The fourth proportional to 315,862.27, 435,890.17 and 172,622.33 is: 238,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,862.27 : 435,890.17 = 172,622.33 : x
  2. Step 2: Convert to fraction form
    315,862.27/435,890.17 = 172,622.33/x
  3. Step 3: Cross multiply
    315,862.27x = 435,890.17 × 172,622.33
  4. Step 4: Simplify right side
    315,862.27x = 75,244,376,769.50
  5. Step 5: Solve for x
    x = 75,244,376,769.50/315,862.27
  6. Step 6: Final answer
    x = 238,218.95

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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.