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Finding the Fourth Proportional to 386,672.64, 579,824.88 and 158,932.68

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Solution

The fourth proportional to 386,672.64, 579,824.88 and 158,932.68 is: 238,323.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,672.64 : 579,824.88 = 158,932.68 : x
  2. Step 2: Convert to fraction form
    386,672.64/579,824.88 = 158,932.68/x
  3. Step 3: Cross multiply
    386,672.64x = 579,824.88 × 158,932.68
  4. Step 4: Simplify right side
    386,672.64x = 92,153,122,109.08
  5. Step 5: Solve for x
    x = 92,153,122,109.08/386,672.64
  6. Step 6: Final answer
    x = 238,323.36

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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.