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Finding the Fourth Proportional to 243,467.67, 335,979.09 and 136,038.59

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Solution

The fourth proportional to 243,467.67, 335,979.09 and 136,038.59 is: 187,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,467.67 : 335,979.09 = 136,038.59 : x
  2. Step 2: Convert to fraction form
    243,467.67/335,979.09 = 136,038.59/x
  3. Step 3: Cross multiply
    243,467.67x = 335,979.09 × 136,038.59
  4. Step 4: Simplify right side
    243,467.67x = 45,706,121,253.11
  5. Step 5: Solve for x
    x = 45,706,121,253.11/243,467.67
  6. Step 6: Final answer
    x = 187,729.73

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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.