Home / 380,982.39-571,473.54-128,241.66

Finding the Fourth Proportional to 380,982.39, 571,473.54 and 128,241.66

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Solution

The fourth proportional to 380,982.39, 571,473.54 and 128,241.66 is: 192,362.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,982.39 : 571,473.54 = 128,241.66 : x
  2. Step 2: Convert to fraction form
    380,982.39/571,473.54 = 128,241.66/x
  3. Step 3: Cross multiply
    380,982.39x = 571,473.54 × 128,241.66
  4. Step 4: Simplify right side
    380,982.39x = 73,286,715,415.68
  5. Step 5: Solve for x
    x = 73,286,715,415.68/380,982.39
  6. Step 6: Final answer
    x = 192,362.47

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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.