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Finding the Fourth Proportional to 238,636.15, 329,324.12 and 129,747.81

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Solution

The fourth proportional to 238,636.15, 329,324.12 and 129,747.81 is: 179,055.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,636.15 : 329,324.12 = 129,747.81 : x
  2. Step 2: Convert to fraction form
    238,636.15/329,324.12 = 129,747.81/x
  3. Step 3: Cross multiply
    238,636.15x = 329,324.12 × 129,747.81
  4. Step 4: Simplify right side
    238,636.15x = 42,729,081,054.82
  5. Step 5: Solve for x
    x = 42,729,081,054.82/238,636.15
  6. Step 6: Final answer
    x = 179,055.36

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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.