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Finding the Fourth Proportional to 442,643.70, 663,173.55 and 269,219.70

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Solution

The fourth proportional to 442,643.70, 663,173.55 and 269,219.70 is: 403,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,643.70 : 663,173.55 = 269,219.70 : x
  2. Step 2: Convert to fraction form
    442,643.70/663,173.55 = 269,219.70/x
  3. Step 3: Cross multiply
    442,643.70x = 663,173.55 × 269,219.70
  4. Step 4: Simplify right side
    442,643.70x = 178,539,384,178.94
  5. Step 5: Solve for x
    x = 178,539,384,178.94/442,643.70
  6. Step 6: Final answer
    x = 403,347.85

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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.