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Finding the Fourth Proportional to 354,480.28, 489,229.80 and 225,430.94

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Solution

The fourth proportional to 354,480.28, 489,229.80 and 225,430.94 is: 311,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,480.28 : 489,229.80 = 225,430.94 : x
  2. Step 2: Convert to fraction form
    354,480.28/489,229.80 = 225,430.94/x
  3. Step 3: Cross multiply
    354,480.28x = 489,229.80 × 225,430.94
  4. Step 4: Simplify right side
    354,480.28x = 110,287,533,690.01
  5. Step 5: Solve for x
    x = 110,287,533,690.01/354,480.28
  6. Step 6: Final answer
    x = 311,124.60

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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.