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Finding the Fourth Proportional to 243,808.72, 336,481.36 and 140,446.47

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Solution

The fourth proportional to 243,808.72, 336,481.36 and 140,446.47 is: 193,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,808.72 : 336,481.36 = 140,446.47 : x
  2. Step 2: Convert to fraction form
    243,808.72/336,481.36 = 140,446.47/x
  3. Step 3: Cross multiply
    243,808.72x = 336,481.36 × 140,446.47
  4. Step 4: Simplify right side
    243,808.72x = 47,257,620,143.49
  5. Step 5: Solve for x
    x = 47,257,620,143.49/243,808.72
  6. Step 6: Final answer
    x = 193,830.72

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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.