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Finding the Fourth Proportional to 355,419.93, 490,479.51 and 194,275.61

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Solution

The fourth proportional to 355,419.93, 490,479.51 and 194,275.61 is: 268,100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,419.93 : 490,479.51 = 194,275.61 : x
  2. Step 2: Convert to fraction form
    355,419.93/490,479.51 = 194,275.61/x
  3. Step 3: Cross multiply
    355,419.93x = 490,479.51 × 194,275.61
  4. Step 4: Simplify right side
    355,419.93x = 95,288,205,997.75
  5. Step 5: Solve for x
    x = 95,288,205,997.75/355,419.93
  6. Step 6: Final answer
    x = 268,100.35

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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.