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Finding the Fourth Proportional to 354,941.76, 489,748.32 and 225,932.16

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Solution

The fourth proportional to 354,941.76, 489,748.32 and 225,932.16 is: 311,740.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,941.76 : 489,748.32 = 225,932.16 : x
  2. Step 2: Convert to fraction form
    354,941.76/489,748.32 = 225,932.16/x
  3. Step 3: Cross multiply
    354,941.76x = 489,748.32 × 225,932.16
  4. Step 4: Simplify right side
    354,941.76x = 110,649,895,793.97
  5. Step 5: Solve for x
    x = 110,649,895,793.97/354,941.76
  6. Step 6: Final answer
    x = 311,740.99

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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.