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Finding the Fourth Proportional to 691,229, 1,036,843.50 and 165,917

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Solution

The fourth proportional to 691,229, 1,036,843.50 and 165,917 is: 248,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,229 : 1,036,843.50 = 165,917 : x
  2. Step 2: Convert to fraction form
    691,229/1,036,843.50 = 165,917/x
  3. Step 3: Cross multiply
    691,229x = 1,036,843.50 × 165,917
  4. Step 4: Simplify right side
    691,229x = 172,029,962,989.50
  5. Step 5: Solve for x
    x = 172,029,962,989.50/691,229
  6. Step 6: Final answer
    x = 248,875.50

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1.5x scale

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.