Home / 380,870.48-571,380.45-140,986.48

Finding the Fourth Proportional to 380,870.48, 571,380.45 and 140,986.48

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Solution

The fourth proportional to 380,870.48, 571,380.45 and 140,986.48 is: 211,507.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,870.48 : 571,380.45 = 140,986.48 : x
  2. Step 2: Convert to fraction form
    380,870.48/571,380.45 = 140,986.48/x
  3. Step 3: Cross multiply
    380,870.48x = 571,380.45 × 140,986.48
  4. Step 4: Simplify right side
    380,870.48x = 80,556,918,386.32
  5. Step 5: Solve for x
    x = 80,556,918,386.32/380,870.48
  6. Step 6: Final answer
    x = 211,507.38

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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.