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Finding the Fourth Proportional to 386,641.75, 579,729.65 and 173,371.05

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Solution

The fourth proportional to 386,641.75, 579,729.65 and 173,371.05 is: 259,952.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,641.75 : 579,729.65 = 173,371.05 : x
  2. Step 2: Convert to fraction form
    386,641.75/579,729.65 = 173,371.05/x
  3. Step 3: Cross multiply
    386,641.75x = 579,729.65 × 173,371.05
  4. Step 4: Simplify right side
    386,641.75x = 100,508,339,443.76
  5. Step 5: Solve for x
    x = 100,508,339,443.76/386,641.75
  6. Step 6: Final answer
    x = 259,952.11

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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.