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Finding the Fourth Proportional to 238,664.80, 358,005.84 and 80,908.48

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Solution

The fourth proportional to 238,664.80, 358,005.84 and 80,908.48 is: 121,365.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,664.80 : 358,005.84 = 80,908.48 : x
  2. Step 2: Convert to fraction form
    238,664.80/358,005.84 = 80,908.48/x
  3. Step 3: Cross multiply
    238,664.80x = 358,005.84 × 80,908.48
  4. Step 4: Simplify right side
    238,664.80x = 28,965,708,345.52
  5. Step 5: Solve for x
    x = 28,965,708,345.52/238,664.80
  6. Step 6: Final answer
    x = 121,365.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.