Home / 386,121.60-579,326.40-161,507.52

Finding the Fourth Proportional to 386,121.60, 579,326.40 and 161,507.52

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Solution

The fourth proportional to 386,121.60, 579,326.40 and 161,507.52 is: 242,321.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,121.60 : 579,326.40 = 161,507.52 : x
  2. Step 2: Convert to fraction form
    386,121.60/579,326.40 = 161,507.52/x
  3. Step 3: Cross multiply
    386,121.60x = 579,326.40 × 161,507.52
  4. Step 4: Simplify right side
    386,121.60x = 93,565,570,134.53
  5. Step 5: Solve for x
    x = 93,565,570,134.53/386,121.60
  6. Step 6: Final answer
    x = 242,321.51

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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.