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Finding the Fourth Proportional to 354,987.52, 489,902.70 and 193,857.55

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Solution

The fourth proportional to 354,987.52, 489,902.70 and 193,857.55 is: 267,534.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,987.52 : 489,902.70 = 193,857.55 : x
  2. Step 2: Convert to fraction form
    354,987.52/489,902.70 = 193,857.55/x
  3. Step 3: Cross multiply
    354,987.52x = 489,902.70 × 193,857.55
  4. Step 4: Simplify right side
    354,987.52x = 94,971,337,160.39
  5. Step 5: Solve for x
    x = 94,971,337,160.39/354,987.52
  6. Step 6: Final answer
    x = 267,534.30

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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.