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Finding the Fourth Proportional to 309,060.57, 426,454.86 and 180,020.28

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Solution

The fourth proportional to 309,060.57, 426,454.86 and 180,020.28 is: 248,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,060.57 : 426,454.86 = 180,020.28 : x
  2. Step 2: Convert to fraction form
    309,060.57/426,454.86 = 180,020.28/x
  3. Step 3: Cross multiply
    309,060.57x = 426,454.86 × 180,020.28
  4. Step 4: Simplify right side
    309,060.57x = 76,770,523,304.56
  5. Step 5: Solve for x
    x = 76,770,523,304.56/309,060.57
  6. Step 6: Final answer
    x = 248,399.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.