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Finding the Fourth Proportional to 238,914.67, 358,404.95 and 81,100.75

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Solution

The fourth proportional to 238,914.67, 358,404.95 and 81,100.75 is: 121,662.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,914.67 : 358,404.95 = 81,100.75 : x
  2. Step 2: Convert to fraction form
    238,914.67/358,404.95 = 81,100.75/x
  3. Step 3: Cross multiply
    238,914.67x = 358,404.95 × 81,100.75
  4. Step 4: Simplify right side
    238,914.67x = 29,066,910,248.71
  5. Step 5: Solve for x
    x = 29,066,910,248.71/238,914.67
  6. Step 6: Final answer
    x = 121,662.31

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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.