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Finding the Fourth Proportional to 310,918.68, 466,325.82 and 86,301.92

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Solution

The fourth proportional to 310,918.68, 466,325.82 and 86,301.92 is: 129,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,918.68 : 466,325.82 = 86,301.92 : x
  2. Step 2: Convert to fraction form
    310,918.68/466,325.82 = 86,301.92/x
  3. Step 3: Cross multiply
    310,918.68x = 466,325.82 × 86,301.92
  4. Step 4: Simplify right side
    310,918.68x = 40,244,813,611.57
  5. Step 5: Solve for x
    x = 40,244,813,611.57/310,918.68
  6. Step 6: Final answer
    x = 129,438.39

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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.