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Finding the Fourth Proportional to 187,029.20, 280,543.80 and 153,786.80

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Solution

The fourth proportional to 187,029.20, 280,543.80 and 153,786.80 is: 230,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,029.20 : 280,543.80 = 153,786.80 : x
  2. Step 2: Convert to fraction form
    187,029.20/280,543.80 = 153,786.80/x
  3. Step 3: Cross multiply
    187,029.20x = 280,543.80 × 153,786.80
  4. Step 4: Simplify right side
    187,029.20x = 43,143,933,261.84
  5. Step 5: Solve for x
    x = 43,143,933,261.84/187,029.20
  6. Step 6: Final answer
    x = 230,680.20

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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.