Home / 380,998.30-571,097.39-128,191.02

Finding the Fourth Proportional to 380,998.30, 571,097.39 and 128,191.02

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Solution

The fourth proportional to 380,998.30, 571,097.39 and 128,191.02 is: 192,151.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,998.30 : 571,097.39 = 128,191.02 : x
  2. Step 2: Convert to fraction form
    380,998.30/571,097.39 = 128,191.02/x
  3. Step 3: Cross multiply
    380,998.30x = 571,097.39 × 128,191.02
  4. Step 4: Simplify right side
    380,998.30x = 73,209,556,943.44
  5. Step 5: Solve for x
    x = 73,209,556,943.44/380,998.30
  6. Step 6: Final answer
    x = 192,151.93

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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.