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Finding the Fourth Proportional to 243,456.66, 335,944.53 and 136,031.22

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Solution

The fourth proportional to 243,456.66, 335,944.53 and 136,031.22 is: 187,708.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,456.66 : 335,944.53 = 136,031.22 : x
  2. Step 2: Convert to fraction form
    243,456.66/335,944.53 = 136,031.22/x
  3. Step 3: Cross multiply
    243,456.66x = 335,944.53 × 136,031.22
  4. Step 4: Simplify right side
    243,456.66x = 45,698,944,268.23
  5. Step 5: Solve for x
    x = 45,698,944,268.23/243,456.66
  6. Step 6: Final answer
    x = 187,708.75

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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.