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Finding the Fourth Proportional to 243,399.72, 335,852.46 and 135,964.20

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Solution

The fourth proportional to 243,399.72, 335,852.46 and 135,964.20 is: 187,608.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,399.72 : 335,852.46 = 135,964.20 : x
  2. Step 2: Convert to fraction form
    243,399.72/335,852.46 = 135,964.20/x
  3. Step 3: Cross multiply
    243,399.72x = 335,852.46 × 135,964.20
  4. Step 4: Simplify right side
    243,399.72x = 45,663,911,041.93
  5. Step 5: Solve for x
    x = 45,663,911,041.93/243,399.72
  6. Step 6: Final answer
    x = 187,608.72

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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.