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Finding the Fourth Proportional to 225,710.94, 338,467.98 and 85,371.15

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Solution

The fourth proportional to 225,710.94, 338,467.98 and 85,371.15 is: 128,019.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,710.94 : 338,467.98 = 85,371.15 : x
  2. Step 2: Convert to fraction form
    225,710.94/338,467.98 = 85,371.15/x
  3. Step 3: Cross multiply
    225,710.94x = 338,467.98 × 85,371.15
  4. Step 4: Simplify right side
    225,710.94x = 28,895,400,904.20
  5. Step 5: Solve for x
    x = 28,895,400,904.20/225,710.94
  6. Step 6: Final answer
    x = 128,019.50

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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.