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Finding the Fourth Proportional to 287,479.94, 396,722.21 and 166,691.52

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Solution

The fourth proportional to 287,479.94, 396,722.21 and 166,691.52 is: 230,034.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,479.94 : 396,722.21 = 166,691.52 : x
  2. Step 2: Convert to fraction form
    287,479.94/396,722.21 = 166,691.52/x
  3. Step 3: Cross multiply
    287,479.94x = 396,722.21 × 166,691.52
  4. Step 4: Simplify right side
    287,479.94x = 66,130,227,369.20
  5. Step 5: Solve for x
    x = 66,130,227,369.20/287,479.94
  6. Step 6: Final answer
    x = 230,034.24

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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.