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Finding the Fourth Proportional to 242,479.81, 334,632.47 and 135,049.85

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Solution

The fourth proportional to 242,479.81, 334,632.47 and 135,049.85 is: 186,374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,479.81 : 334,632.47 = 135,049.85 : x
  2. Step 2: Convert to fraction form
    242,479.81/334,632.47 = 135,049.85/x
  3. Step 3: Cross multiply
    242,479.81x = 334,632.47 × 135,049.85
  4. Step 4: Simplify right side
    242,479.81x = 45,192,063,785.09
  5. Step 5: Solve for x
    x = 45,192,063,785.09/242,479.81
  6. Step 6: Final answer
    x = 186,374.54

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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.