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Finding the Fourth Proportional to 366,987.80, 550,481.70 and 100,789.40

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Solution

The fourth proportional to 366,987.80, 550,481.70 and 100,789.40 is: 151,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,987.80 : 550,481.70 = 100,789.40 : x
  2. Step 2: Convert to fraction form
    366,987.80/550,481.70 = 100,789.40/x
  3. Step 3: Cross multiply
    366,987.80x = 550,481.70 × 100,789.40
  4. Step 4: Simplify right side
    366,987.80x = 55,482,720,253.98
  5. Step 5: Solve for x
    x = 55,482,720,253.98/366,987.80
  6. Step 6: Final answer
    x = 151,184.10

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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.