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Finding the Fourth Proportional to 354,540.80, 489,903.46 and 269,510.24

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Solution

The fourth proportional to 354,540.80, 489,903.46 and 269,510.24 is: 372,408.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,540.80 : 489,903.46 = 269,510.24 : x
  2. Step 2: Convert to fraction form
    354,540.80/489,903.46 = 269,510.24/x
  3. Step 3: Cross multiply
    354,540.80x = 489,903.46 × 269,510.24
  4. Step 4: Simplify right side
    354,540.80x = 132,033,999,081.43
  5. Step 5: Solve for x
    x = 132,033,999,081.43/354,540.80
  6. Step 6: Final answer
    x = 372,408.48

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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.