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Finding the Fourth Proportional to 218,820.25, 328,230.35 and 69,165.62

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Solution

The fourth proportional to 218,820.25, 328,230.35 and 69,165.62 is: 103,748.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,820.25 : 328,230.35 = 69,165.62 : x
  2. Step 2: Convert to fraction form
    218,820.25/328,230.35 = 69,165.62/x
  3. Step 3: Cross multiply
    218,820.25x = 328,230.35 × 69,165.62
  4. Step 4: Simplify right side
    218,820.25x = 22,702,255,163.82
  5. Step 5: Solve for x
    x = 22,702,255,163.82/218,820.25
  6. Step 6: Final answer
    x = 103,748.42

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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.