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Finding the Fourth Proportional to 371,862.38, 512,994.81 and 269,663.64

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Solution

The fourth proportional to 371,862.38, 512,994.81 and 269,663.64 is: 372,008.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,862.38 : 512,994.81 = 269,663.64 : x
  2. Step 2: Convert to fraction form
    371,862.38/512,994.81 = 269,663.64/x
  3. Step 3: Cross multiply
    371,862.38x = 512,994.81 × 269,663.64
  4. Step 4: Simplify right side
    371,862.38x = 138,336,047,765.71
  5. Step 5: Solve for x
    x = 138,336,047,765.71/371,862.38
  6. Step 6: Final answer
    x = 372,008.72

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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.