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Finding the Fourth Proportional to 292,785.71, 404,040.96 and 158,649.71

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Solution

The fourth proportional to 292,785.71, 404,040.96 and 158,649.71 is: 218,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,785.71 : 404,040.96 = 158,649.71 : x
  2. Step 2: Convert to fraction form
    292,785.71/404,040.96 = 158,649.71/x
  3. Step 3: Cross multiply
    292,785.71x = 404,040.96 × 158,649.71
  4. Step 4: Simplify right side
    292,785.71x = 64,100,979,111.92
  5. Step 5: Solve for x
    x = 64,100,979,111.92/292,785.71
  6. Step 6: Final answer
    x = 218,934.80

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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.