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Finding the Fourth Proportional to 660,816, 991,220.76 and 187,502.22

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Solution

The fourth proportional to 660,816, 991,220.76 and 187,502.22 is: 281,252.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,816 : 991,220.76 = 187,502.22 : x
  2. Step 2: Convert to fraction form
    660,816/991,220.76 = 187,502.22/x
  3. Step 3: Cross multiply
    660,816x = 991,220.76 × 187,502.22
  4. Step 4: Simplify right side
    660,816x = 185,856,093,010.09
  5. Step 5: Solve for x
    x = 185,856,093,010.09/660,816
  6. Step 6: Final answer
    x = 281,252.41

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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.