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Finding the Fourth Proportional to 289,591.38, 399,619.76 and 168,752.34

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Solution

The fourth proportional to 289,591.38, 399,619.76 and 168,752.34 is: 232,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,591.38 : 399,619.76 = 168,752.34 : x
  2. Step 2: Convert to fraction form
    289,591.38/399,619.76 = 168,752.34/x
  3. Step 3: Cross multiply
    289,591.38x = 399,619.76 × 168,752.34
  4. Step 4: Simplify right side
    289,591.38x = 67,436,766,768.38
  5. Step 5: Solve for x
    x = 67,436,766,768.38/289,591.38
  6. Step 6: Final answer
    x = 232,868.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.