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Finding the Fourth Proportional to 145,586.88, 218,380.25 and 40,405.82

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Solution

The fourth proportional to 145,586.88, 218,380.25 and 40,405.82 is: 60,608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,586.88 : 218,380.25 = 40,405.82 : x
  2. Step 2: Convert to fraction form
    145,586.88/218,380.25 = 40,405.82/x
  3. Step 3: Cross multiply
    145,586.88x = 218,380.25 × 40,405.82
  4. Step 4: Simplify right side
    145,586.88x = 8,823,832,082.17
  5. Step 5: Solve for x
    x = 8,823,832,082.17/145,586.88
  6. Step 6: Final answer
    x = 60,608.70

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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.