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Finding the Fourth Proportional to 508,791.65, 763,187.47 and 193,247.78

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Solution

The fourth proportional to 508,791.65, 763,187.47 and 193,247.78 is: 289,871.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,791.65 : 763,187.47 = 193,247.78 : x
  2. Step 2: Convert to fraction form
    508,791.65/763,187.47 = 193,247.78/x
  3. Step 3: Cross multiply
    508,791.65x = 763,187.47 × 193,247.78
  4. Step 4: Simplify right side
    508,791.65x = 147,484,280,002.26
  5. Step 5: Solve for x
    x = 147,484,280,002.26/508,791.65
  6. Step 6: Final answer
    x = 289,871.66

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Similar ratio
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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.