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Finding the Fourth Proportional to 186,432.90, 279,452.43 and 133,813.86

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Solution

The fourth proportional to 186,432.90, 279,452.43 and 133,813.86 is: 200,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,432.90 : 279,452.43 = 133,813.86 : x
  2. Step 2: Convert to fraction form
    186,432.90/279,452.43 = 133,813.86/x
  3. Step 3: Cross multiply
    186,432.90x = 279,452.43 × 133,813.86
  4. Step 4: Simplify right side
    186,432.90x = 37,394,608,344.68
  5. Step 5: Solve for x
    x = 37,394,608,344.68/186,432.90
  6. Step 6: Final answer
    x = 200,579.45

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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.