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Finding the Fourth Proportional to 393,166.62, 589,780.71 and 140,501.70

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Solution

The fourth proportional to 393,166.62, 589,780.71 and 140,501.70 is: 210,763.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,166.62 : 589,780.71 = 140,501.70 : x
  2. Step 2: Convert to fraction form
    393,166.62/589,780.71 = 140,501.70/x
  3. Step 3: Cross multiply
    393,166.62x = 589,780.71 × 140,501.70
  4. Step 4: Simplify right side
    393,166.62x = 82,865,192,382.21
  5. Step 5: Solve for x
    x = 82,865,192,382.21/393,166.62
  6. Step 6: Final answer
    x = 210,763.55

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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.