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Finding the Fourth Proportional to 300,876.78, 415,155.51 and 193,422.18

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Solution

The fourth proportional to 300,876.78, 415,155.51 and 193,422.18 is: 266,887.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,876.78 : 415,155.51 = 193,422.18 : x
  2. Step 2: Convert to fraction form
    300,876.78/415,155.51 = 193,422.18/x
  3. Step 3: Cross multiply
    300,876.78x = 415,155.51 × 193,422.18
  4. Step 4: Simplify right side
    300,876.78x = 80,300,283,783.21
  5. Step 5: Solve for x
    x = 80,300,283,783.21/300,876.78
  6. Step 6: Final answer
    x = 266,887.61

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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.