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Finding the Fourth Proportional to 354,485.28, 489,269.08 and 225,398.82

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Solution

The fourth proportional to 354,485.28, 489,269.08 and 225,398.82 is: 311,100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,485.28 : 489,269.08 = 225,398.82 : x
  2. Step 2: Convert to fraction form
    354,485.28/489,269.08 = 225,398.82/x
  3. Step 3: Cross multiply
    354,485.28x = 489,269.08 × 225,398.82
  4. Step 4: Simplify right side
    354,485.28x = 110,280,673,294.49
  5. Step 5: Solve for x
    x = 110,280,673,294.49/354,485.28
  6. Step 6: Final answer
    x = 311,100.85

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1.5x scale

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.