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Finding the Fourth Proportional to 300,686.75, 451,056.77 and 79,070.75

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Solution

The fourth proportional to 300,686.75, 451,056.77 and 79,070.75 is: 118,613.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,686.75 : 451,056.77 = 79,070.75 : x
  2. Step 2: Convert to fraction form
    300,686.75/451,056.77 = 79,070.75/x
  3. Step 3: Cross multiply
    300,686.75x = 451,056.77 × 79,070.75
  4. Step 4: Simplify right side
    300,686.75x = 35,665,397,096.48
  5. Step 5: Solve for x
    x = 35,665,397,096.48/300,686.75
  6. Step 6: Final answer
    x = 118,613.13

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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.