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Finding the Fourth Proportional to 386,217.40, 579,326.10 and 164,572.60

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Solution

The fourth proportional to 386,217.40, 579,326.10 and 164,572.60 is: 246,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,217.40 : 579,326.10 = 164,572.60 : x
  2. Step 2: Convert to fraction form
    386,217.40/579,326.10 = 164,572.60/x
  3. Step 3: Cross multiply
    386,217.40x = 579,326.10 × 164,572.60
  4. Step 4: Simplify right side
    386,217.40x = 95,341,202,524.86
  5. Step 5: Solve for x
    x = 95,341,202,524.86/386,217.40
  6. Step 6: Final answer
    x = 246,858.90

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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.