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Finding the Fourth Proportional to 518,231.33, 777,761.72 and 268,984.61

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Solution

The fourth proportional to 518,231.33, 777,761.72 and 268,984.61 is: 403,692.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,231.33 : 777,761.72 = 268,984.61 : x
  2. Step 2: Convert to fraction form
    518,231.33/777,761.72 = 268,984.61/x
  3. Step 3: Cross multiply
    518,231.33x = 777,761.72 × 268,984.61
  4. Step 4: Simplify right side
    518,231.33x = 209,205,931,582.21
  5. Step 5: Solve for x
    x = 209,205,931,582.21/518,231.33
  6. Step 6: Final answer
    x = 403,692.17

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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.