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Finding the Fourth Proportional to 243,441.54, 335,764.08 and 209,507.40

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Solution

The fourth proportional to 243,441.54, 335,764.08 and 209,507.40 is: 288,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,441.54 : 335,764.08 = 209,507.40 : x
  2. Step 2: Convert to fraction form
    243,441.54/335,764.08 = 209,507.40/x
  3. Step 3: Cross multiply
    243,441.54x = 335,764.08 × 209,507.40
  4. Step 4: Simplify right side
    243,441.54x = 70,345,059,414.19
  5. Step 5: Solve for x
    x = 70,345,059,414.19/243,441.54
  6. Step 6: Final answer
    x = 288,960.79

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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.