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Finding the Fourth Proportional to 218,847.18, 328,309.65 and 74,745.15

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Solution

The fourth proportional to 218,847.18, 328,309.65 and 74,745.15 is: 112,131.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,847.18 : 328,309.65 = 74,745.15 : x
  2. Step 2: Convert to fraction form
    218,847.18/328,309.65 = 74,745.15/x
  3. Step 3: Cross multiply
    218,847.18x = 328,309.65 × 74,745.15
  4. Step 4: Simplify right side
    218,847.18x = 24,539,554,035.70
  5. Step 5: Solve for x
    x = 24,539,554,035.70/218,847.18
  6. Step 6: Final answer
    x = 112,131.00

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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.