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Finding the Fourth Proportional to 218,987.48, 328,452.84 and 69,242.84

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Solution

The fourth proportional to 218,987.48, 328,452.84 and 69,242.84 is: 103,855.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,987.48 : 328,452.84 = 69,242.84 : x
  2. Step 2: Convert to fraction form
    218,987.48/328,452.84 = 69,242.84/x
  3. Step 3: Cross multiply
    218,987.48x = 328,452.84 × 69,242.84
  4. Step 4: Simplify right side
    218,987.48x = 22,743,007,447.67
  5. Step 5: Solve for x
    x = 22,743,007,447.67/218,987.48
  6. Step 6: Final answer
    x = 103,855.29

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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.