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Finding the Fourth Proportional to 512,999.80, 769,582.38 and 158,013.65

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Solution

The fourth proportional to 512,999.80, 769,582.38 and 158,013.65 is: 237,045.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,999.80 : 769,582.38 = 158,013.65 : x
  2. Step 2: Convert to fraction form
    512,999.80/769,582.38 = 158,013.65/x
  3. Step 3: Cross multiply
    512,999.80x = 769,582.38 × 158,013.65
  4. Step 4: Simplify right side
    512,999.80x = 121,604,523,355.99
  5. Step 5: Solve for x
    x = 121,604,523,355.99/512,999.80
  6. Step 6: Final answer
    x = 237,045.95

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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.