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Finding the Fourth Proportional to 144,856.80, 217,544.40 and 140,191.20

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Solution

The fourth proportional to 144,856.80, 217,544.40 and 140,191.20 is: 210,537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,856.80 : 217,544.40 = 140,191.20 : x
  2. Step 2: Convert to fraction form
    144,856.80/217,544.40 = 140,191.20/x
  3. Step 3: Cross multiply
    144,856.80x = 217,544.40 × 140,191.20
  4. Step 4: Simplify right side
    144,856.80x = 30,497,810,489.28
  5. Step 5: Solve for x
    x = 30,497,810,489.28/144,856.80
  6. Step 6: Final answer
    x = 210,537.65

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1.5x scale

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.