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Finding the Fourth Proportional to 354,521.12, 489,244.89 and 193,376.12

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Solution

The fourth proportional to 354,521.12, 489,244.89 and 193,376.12 is: 266,862.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,521.12 : 489,244.89 = 193,376.12 : x
  2. Step 2: Convert to fraction form
    354,521.12/489,244.89 = 193,376.12/x
  3. Step 3: Cross multiply
    354,521.12x = 489,244.89 × 193,376.12
  4. Step 4: Simplify right side
    354,521.12x = 94,608,278,558.03
  5. Step 5: Solve for x
    x = 94,608,278,558.03/354,521.12
  6. Step 6: Final answer
    x = 266,862.18

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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.