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Finding the Fourth Proportional to 329,663.80, 494,495.70 and 217,470.70

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Solution

The fourth proportional to 329,663.80, 494,495.70 and 217,470.70 is: 326,206.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,663.80 : 494,495.70 = 217,470.70 : x
  2. Step 2: Convert to fraction form
    329,663.80/494,495.70 = 217,470.70/x
  3. Step 3: Cross multiply
    329,663.80x = 494,495.70 × 217,470.70
  4. Step 4: Simplify right side
    329,663.80x = 107,538,326,025.99
  5. Step 5: Solve for x
    x = 107,538,326,025.99/329,663.80
  6. Step 6: Final answer
    x = 326,206.05

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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.