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Finding the Fourth Proportional to 187,632.80, 280,834.80 and 145,853.60

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Solution

The fourth proportional to 187,632.80, 280,834.80 and 145,853.60 is: 218,302.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,632.80 : 280,834.80 = 145,853.60 : x
  2. Step 2: Convert to fraction form
    187,632.80/280,834.80 = 145,853.60/x
  3. Step 3: Cross multiply
    187,632.80x = 280,834.80 × 145,853.60
  4. Step 4: Simplify right side
    187,632.80x = 40,960,766,585.28
  5. Step 5: Solve for x
    x = 40,960,766,585.28/187,632.80
  6. Step 6: Final answer
    x = 218,302.81

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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.