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Finding the Fourth Proportional to 326,251.91, 489,219.65 and 191,360.06

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Solution

The fourth proportional to 326,251.91, 489,219.65 and 191,360.06 is: 286,947.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,251.91 : 489,219.65 = 191,360.06 : x
  2. Step 2: Convert to fraction form
    326,251.91/489,219.65 = 191,360.06/x
  3. Step 3: Cross multiply
    326,251.91x = 489,219.65 × 191,360.06
  4. Step 4: Simplify right side
    326,251.91x = 93,617,098,891.88
  5. Step 5: Solve for x
    x = 93,617,098,891.88/326,251.91
  6. Step 6: Final answer
    x = 286,947.28

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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.