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Finding the Fourth Proportional to 260,801.10, 391,201.65 and 102,948.30

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Solution

The fourth proportional to 260,801.10, 391,201.65 and 102,948.30 is: 154,422.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,801.10 : 391,201.65 = 102,948.30 : x
  2. Step 2: Convert to fraction form
    260,801.10/391,201.65 = 102,948.30/x
  3. Step 3: Cross multiply
    260,801.10x = 391,201.65 × 102,948.30
  4. Step 4: Simplify right side
    260,801.10x = 40,273,544,824.70
  5. Step 5: Solve for x
    x = 40,273,544,824.70/260,801.10
  6. Step 6: Final answer
    x = 154,422.45

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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.