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Finding the Fourth Proportional to 244,178.40, 366,332.40 and 86,390.40

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Solution

The fourth proportional to 244,178.40, 366,332.40 and 86,390.40 is: 129,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    244,178.40 : 366,332.40 = 86,390.40 : x
  2. Step 2: Convert to fraction form
    244,178.40/366,332.40 = 86,390.40/x
  3. Step 3: Cross multiply
    244,178.40x = 366,332.40 × 86,390.40
  4. Step 4: Simplify right side
    244,178.40x = 31,647,602,568.96
  5. Step 5: Solve for x
    x = 31,647,602,568.96/244,178.40
  6. Step 6: Final answer
    x = 129,608.53

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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.