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Finding the Fourth Proportional to 447,679.52, 671,545.59 and 127,806.81

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Solution

The fourth proportional to 447,679.52, 671,545.59 and 127,806.81 is: 191,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,679.52 : 671,545.59 = 127,806.81 : x
  2. Step 2: Convert to fraction form
    447,679.52/671,545.59 = 127,806.81/x
  3. Step 3: Cross multiply
    447,679.52x = 671,545.59 × 127,806.81
  4. Step 4: Simplify right side
    447,679.52x = 85,828,100,407.34
  5. Step 5: Solve for x
    x = 85,828,100,407.34/447,679.52
  6. Step 6: Final answer
    x = 191,717.73

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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.