Home / 259,316.76-388,753.26-99,507.36

Finding the Fourth Proportional to 259,316.76, 388,753.26 and 99,507.36

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Solution

The fourth proportional to 259,316.76, 388,753.26 and 99,507.36 is: 149,175.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,316.76 : 388,753.26 = 99,507.36 : x
  2. Step 2: Convert to fraction form
    259,316.76/388,753.26 = 99,507.36/x
  3. Step 3: Cross multiply
    259,316.76x = 388,753.26 × 99,507.36
  4. Step 4: Simplify right side
    259,316.76x = 38,683,810,593.99
  5. Step 5: Solve for x
    x = 38,683,810,593.99/259,316.76
  6. Step 6: Final answer
    x = 149,175.90

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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.