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Finding the Fourth Proportional to 386,959.32, 579,847.20 and 162,197.23

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Solution

The fourth proportional to 386,959.32, 579,847.20 and 162,197.23 is: 243,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,959.32 : 579,847.20 = 162,197.23 : x
  2. Step 2: Convert to fraction form
    386,959.32/579,847.20 = 162,197.23/x
  3. Step 3: Cross multiply
    386,959.32x = 579,847.20 × 162,197.23
  4. Step 4: Simplify right side
    386,959.32x = 94,049,608,852.27
  5. Step 5: Solve for x
    x = 94,049,608,852.27/386,959.32
  6. Step 6: Final answer
    x = 243,047.79

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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.