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Finding the Fourth Proportional to 404,965.20, 607,447.80 and 326,233.20

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Solution

The fourth proportional to 404,965.20, 607,447.80 and 326,233.20 is: 489,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,965.20 : 607,447.80 = 326,233.20 : x
  2. Step 2: Convert to fraction form
    404,965.20/607,447.80 = 326,233.20/x
  3. Step 3: Cross multiply
    404,965.20x = 607,447.80 × 326,233.20
  4. Step 4: Simplify right side
    404,965.20x = 198,169,639,626.96
  5. Step 5: Solve for x
    x = 198,169,639,626.96/404,965.20
  6. Step 6: Final answer
    x = 489,349.80

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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.