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Finding the Fourth Proportional to 354,470.45, 489,150 and 201,487.41

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Solution

The fourth proportional to 354,470.45, 489,150 and 201,487.41 is: 278,041.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,470.45 : 489,150 = 201,487.41 : x
  2. Step 2: Convert to fraction form
    354,470.45/489,150 = 201,487.41/x
  3. Step 3: Cross multiply
    354,470.45x = 489,150 × 201,487.41
  4. Step 4: Simplify right side
    354,470.45x = 98,557,566,601.50
  5. Step 5: Solve for x
    x = 98,557,566,601.50/354,470.45
  6. Step 6: Final answer
    x = 278,041.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.