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Finding the Fourth Proportional to 354,538.52, 489,262.35 and 193,393.56

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Solution

The fourth proportional to 354,538.52, 489,262.35 and 193,393.56 is: 266,882.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,538.52 : 489,262.35 = 193,393.56 : x
  2. Step 2: Convert to fraction form
    354,538.52/489,262.35 = 193,393.56/x
  3. Step 3: Cross multiply
    354,538.52x = 489,262.35 × 193,393.56
  4. Step 4: Simplify right side
    354,538.52x = 94,620,188,968.48
  5. Step 5: Solve for x
    x = 94,620,188,968.48/354,538.52
  6. Step 6: Final answer
    x = 266,882.68

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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.