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Finding the Fourth Proportional to 379,635.20, 569,452.80 and 240,012.80

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Solution

The fourth proportional to 379,635.20, 569,452.80 and 240,012.80 is: 360,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,635.20 : 569,452.80 = 240,012.80 : x
  2. Step 2: Convert to fraction form
    379,635.20/569,452.80 = 240,012.80/x
  3. Step 3: Cross multiply
    379,635.20x = 569,452.80 × 240,012.80
  4. Step 4: Simplify right side
    379,635.20x = 136,675,960,995.84
  5. Step 5: Solve for x
    x = 136,675,960,995.84/379,635.20
  6. Step 6: Final answer
    x = 360,019.20

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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.