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Finding the Fourth Proportional to 252,179.81, 378,195.90 and 207,696.23

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Solution

The fourth proportional to 252,179.81, 378,195.90 and 207,696.23 is: 311,483.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,179.81 : 378,195.90 = 207,696.23 : x
  2. Step 2: Convert to fraction form
    252,179.81/378,195.90 = 207,696.23/x
  3. Step 3: Cross multiply
    252,179.81x = 378,195.90 × 207,696.23
  4. Step 4: Simplify right side
    252,179.81x = 78,549,862,631.46
  5. Step 5: Solve for x
    x = 78,549,862,631.46/252,179.81
  6. Step 6: Final answer
    x = 311,483.55

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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.