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Finding the Fourth Proportional to 200,397.12, 300,698.55 and 88,155.42

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Solution

The fourth proportional to 200,397.12, 300,698.55 and 88,155.42 is: 132,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,397.12 : 300,698.55 = 88,155.42 : x
  2. Step 2: Convert to fraction form
    200,397.12/300,698.55 = 88,155.42/x
  3. Step 3: Cross multiply
    200,397.12x = 300,698.55 × 88,155.42
  4. Step 4: Simplify right side
    200,397.12x = 26,508,206,968.64
  5. Step 5: Solve for x
    x = 26,508,206,968.64/200,397.12
  6. Step 6: Final answer
    x = 132,278.38

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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.