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Finding the Fourth Proportional to 354,342.20, 488,983.40 and 193,200.40

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Solution

The fourth proportional to 354,342.20, 488,983.40 and 193,200.40 is: 266,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,342.20 : 488,983.40 = 193,200.40 : x
  2. Step 2: Convert to fraction form
    354,342.20/488,983.40 = 193,200.40/x
  3. Step 3: Cross multiply
    354,342.20x = 488,983.40 × 193,200.40
  4. Step 4: Simplify right side
    354,342.20x = 94,471,788,473.36
  5. Step 5: Solve for x
    x = 94,471,788,473.36/354,342.20
  6. Step 6: Final answer
    x = 266,611.73

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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.