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Finding the Fourth Proportional to 199,397.98, 298,997.02 and 66,231.55

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Solution

The fourth proportional to 199,397.98, 298,997.02 and 66,231.55 is: 99,314.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,397.98 : 298,997.02 = 66,231.55 : x
  2. Step 2: Convert to fraction form
    199,397.98/298,997.02 = 66,231.55/x
  3. Step 3: Cross multiply
    199,397.98x = 298,997.02 × 66,231.55
  4. Step 4: Simplify right side
    199,397.98x = 19,803,036,079.98
  5. Step 5: Solve for x
    x = 19,803,036,079.98/199,397.98
  6. Step 6: Final answer
    x = 99,314.13

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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.