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Finding the Fourth Proportional to 238,973.92, 329,745.42 and 136,980.61

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Solution

The fourth proportional to 238,973.92, 329,745.42 and 136,980.61 is: 189,011.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,973.92 : 329,745.42 = 136,980.61 : x
  2. Step 2: Convert to fraction form
    238,973.92/329,745.42 = 136,980.61/x
  3. Step 3: Cross multiply
    238,973.92x = 329,745.42 × 136,980.61
  4. Step 4: Simplify right side
    238,973.92x = 45,168,730,192.02
  5. Step 5: Solve for x
    x = 45,168,730,192.02/238,973.92
  6. Step 6: Final answer
    x = 189,011.13

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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.