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Finding the Fourth Proportional to 353,938.60, 488,418 and 200,956.76

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Solution

The fourth proportional to 353,938.60, 488,418 and 200,956.76 is: 277,310.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,938.60 : 488,418 = 200,956.76 : x
  2. Step 2: Convert to fraction form
    353,938.60/488,418 = 200,956.76/x
  3. Step 3: Cross multiply
    353,938.60x = 488,418 × 200,956.76
  4. Step 4: Simplify right side
    353,938.60x = 98,150,898,805.68
  5. Step 5: Solve for x
    x = 98,150,898,805.68/353,938.60
  6. Step 6: Final answer
    x = 277,310.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.