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Finding the Fourth Proportional to 311,471.72, 467,328.78 and 124,536.68

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Solution

The fourth proportional to 311,471.72, 467,328.78 and 124,536.68 is: 186,853.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,471.72 : 467,328.78 = 124,536.68 : x
  2. Step 2: Convert to fraction form
    311,471.72/467,328.78 = 124,536.68/x
  3. Step 3: Cross multiply
    311,471.72x = 467,328.78 × 124,536.68
  4. Step 4: Simplify right side
    311,471.72x = 58,199,574,729.65
  5. Step 5: Solve for x
    x = 58,199,574,729.65/311,471.72
  6. Step 6: Final answer
    x = 186,853.48

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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.