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Finding the Fourth Proportional to 326,047.70, 489,314.55 and 168,194.90

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Solution

The fourth proportional to 326,047.70, 489,314.55 and 168,194.90 is: 252,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,047.70 : 489,314.55 = 168,194.90 : x
  2. Step 2: Convert to fraction form
    326,047.70/489,314.55 = 168,194.90/x
  3. Step 3: Cross multiply
    326,047.70x = 489,314.55 × 168,194.90
  4. Step 4: Simplify right side
    326,047.70x = 82,300,211,805.80
  5. Step 5: Solve for x
    x = 82,300,211,805.80/326,047.70
  6. Step 6: Final answer
    x = 252,417.70

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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.