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Finding the Fourth Proportional to 386,313.60, 579,470.40 and 329,232.90

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Solution

The fourth proportional to 386,313.60, 579,470.40 and 329,232.90 is: 493,849.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,313.60 : 579,470.40 = 329,232.90 : x
  2. Step 2: Convert to fraction form
    386,313.60/579,470.40 = 329,232.90/x
  3. Step 3: Cross multiply
    386,313.60x = 579,470.40 × 329,232.90
  4. Step 4: Simplify right side
    386,313.60x = 190,780,720,256.16
  5. Step 5: Solve for x
    x = 190,780,720,256.16/386,313.60
  6. Step 6: Final answer
    x = 493,849.35

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Similar ratio
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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.