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Finding the Fourth Proportional to 243,088.93, 335,479.69 and 135,660.76

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Solution

The fourth proportional to 243,088.93, 335,479.69 and 135,660.76 is: 187,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,088.93 : 335,479.69 = 135,660.76 : x
  2. Step 2: Convert to fraction form
    243,088.93/335,479.69 = 135,660.76/x
  3. Step 3: Cross multiply
    243,088.93x = 335,479.69 × 135,660.76
  4. Step 4: Simplify right side
    243,088.93x = 45,511,429,040.84
  5. Step 5: Solve for x
    x = 45,511,429,040.84/243,088.93
  6. Step 6: Final answer
    x = 187,221.31

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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.