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Finding the Fourth Proportional to 218,968.04, 328,452.06 and 78,650.12

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Solution

The fourth proportional to 218,968.04, 328,452.06 and 78,650.12 is: 117,975.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,968.04 : 328,452.06 = 78,650.12 : x
  2. Step 2: Convert to fraction form
    218,968.04/328,452.06 = 78,650.12/x
  3. Step 3: Cross multiply
    218,968.04x = 328,452.06 × 78,650.12
  4. Step 4: Simplify right side
    218,968.04x = 25,832,793,933.25
  5. Step 5: Solve for x
    x = 25,832,793,933.25/218,968.04
  6. Step 6: Final answer
    x = 117,975.18

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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.