Home / 258,769.01-388,150.04-66,642.39

Finding the Fourth Proportional to 258,769.01, 388,150.04 and 66,642.39

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Solution

The fourth proportional to 258,769.01, 388,150.04 and 66,642.39 is: 99,962.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,769.01 : 388,150.04 = 66,642.39 : x
  2. Step 2: Convert to fraction form
    258,769.01/388,150.04 = 66,642.39/x
  3. Step 3: Cross multiply
    258,769.01x = 388,150.04 × 66,642.39
  4. Step 4: Simplify right side
    258,769.01x = 25,867,246,510.80
  5. Step 5: Solve for x
    x = 25,867,246,510.80/258,769.01
  6. Step 6: Final answer
    x = 99,962.69

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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.