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Finding the Fourth Proportional to 238,661.80, 358,001.34 and 80,905.48

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Solution

The fourth proportional to 238,661.80, 358,001.34 and 80,905.48 is: 121,361.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,661.80 : 358,001.34 = 80,905.48 : x
  2. Step 2: Convert to fraction form
    238,661.80/358,001.34 = 80,905.48/x
  3. Step 3: Cross multiply
    238,661.80x = 358,001.34 × 80,905.48
  4. Step 4: Simplify right side
    238,661.80x = 28,964,270,253.34
  5. Step 5: Solve for x
    x = 28,964,270,253.34/238,661.80
  6. Step 6: Final answer
    x = 121,361.15

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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.