Home / 380,849.80-571,298.82-128,110.36

Finding the Fourth Proportional to 380,849.80, 571,298.82 and 128,110.36

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Solution

The fourth proportional to 380,849.80, 571,298.82 and 128,110.36 is: 192,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,849.80 : 571,298.82 = 128,110.36 : x
  2. Step 2: Convert to fraction form
    380,849.80/571,298.82 = 128,110.36/x
  3. Step 3: Cross multiply
    380,849.80x = 571,298.82 × 128,110.36
  4. Step 4: Simplify right side
    380,849.80x = 73,189,297,497.78
  5. Step 5: Solve for x
    x = 73,189,297,497.78/380,849.80
  6. Step 6: Final answer
    x = 192,173.65

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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.