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Finding the Fourth Proportional to 144,546.80, 216,917.40 and 65,620.40

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Solution

The fourth proportional to 144,546.80, 216,917.40 and 65,620.40 is: 98,474.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,546.80 : 216,917.40 = 65,620.40 : x
  2. Step 2: Convert to fraction form
    144,546.80/216,917.40 = 65,620.40/x
  3. Step 3: Cross multiply
    144,546.80x = 216,917.40 × 65,620.40
  4. Step 4: Simplify right side
    144,546.80x = 14,234,206,554.96
  5. Step 5: Solve for x
    x = 14,234,206,554.96/144,546.80
  6. Step 6: Final answer
    x = 98,474.73

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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.