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Finding the Fourth Proportional to 276,290.76, 413,544.78 and 142,987.80

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Solution

The fourth proportional to 276,290.76, 413,544.78 and 142,987.80 is: 214,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,290.76 : 413,544.78 = 142,987.80 : x
  2. Step 2: Convert to fraction form
    276,290.76/413,544.78 = 142,987.80/x
  3. Step 3: Cross multiply
    276,290.76x = 413,544.78 × 142,987.80
  4. Step 4: Simplify right side
    276,290.76x = 59,131,858,293.68
  5. Step 5: Solve for x
    x = 59,131,858,293.68/276,290.76
  6. Step 6: Final answer
    x = 214,020.40

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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.