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Finding the Fourth Proportional to 354,878.72, 532,422 and 133,280

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Solution

The fourth proportional to 354,878.72, 532,422 and 133,280 is: 199,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,878.72 : 532,422 = 133,280 : x
  2. Step 2: Convert to fraction form
    354,878.72/532,422 = 133,280/x
  3. Step 3: Cross multiply
    354,878.72x = 532,422 × 133,280
  4. Step 4: Simplify right side
    354,878.72x = 70,961,204,160
  5. Step 5: Solve for x
    x = 70,961,204,160/354,878.72
  6. Step 6: Final answer
    x = 199,959.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.