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Finding the Fourth Proportional to 645,169.87, 967,150.29 and 218,407.20

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Solution

The fourth proportional to 645,169.87, 967,150.29 and 218,407.20 is: 327,406.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,169.87 : 967,150.29 = 218,407.20 : x
  2. Step 2: Convert to fraction form
    645,169.87/967,150.29 = 218,407.20/x
  3. Step 3: Cross multiply
    645,169.87x = 967,150.29 × 218,407.20
  4. Step 4: Simplify right side
    645,169.87x = 211,232,584,010.30
  5. Step 5: Solve for x
    x = 211,232,584,010.30/645,169.87
  6. Step 6: Final answer
    x = 327,406.15

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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.