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Finding the Fourth Proportional to 768,099.82, 1,152,149.86 and 207,134.38

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Solution

The fourth proportional to 768,099.82, 1,152,149.86 and 207,134.38 is: 310,701.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,099.82 : 1,152,149.86 = 207,134.38 : x
  2. Step 2: Convert to fraction form
    768,099.82/1,152,149.86 = 207,134.38/x
  3. Step 3: Cross multiply
    768,099.82x = 1,152,149.86 × 207,134.38
  4. Step 4: Simplify right side
    768,099.82x = 238,649,846,918.19
  5. Step 5: Solve for x
    x = 238,649,846,918.19/768,099.82
  6. Step 6: Final answer
    x = 310,701.61

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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.