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Finding the Fourth Proportional to 225,703.40, 338,665.23 and 99,327.71

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Solution

The fourth proportional to 225,703.40, 338,665.23 and 99,327.71 is: 149,040.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,703.40 : 338,665.23 = 99,327.71 : x
  2. Step 2: Convert to fraction form
    225,703.40/338,665.23 = 99,327.71/x
  3. Step 3: Cross multiply
    225,703.40x = 338,665.23 × 99,327.71
  4. Step 4: Simplify right side
    225,703.40x = 33,638,842,599.19
  5. Step 5: Solve for x
    x = 33,638,842,599.19/225,703.40
  6. Step 6: Final answer
    x = 149,040.04

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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.