Home / 380,334.72-570,191.04-143,542.56

Finding the Fourth Proportional to 380,334.72, 570,191.04 and 143,542.56

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Solution

The fourth proportional to 380,334.72, 570,191.04 and 143,542.56 is: 215,196.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,334.72 : 570,191.04 = 143,542.56 : x
  2. Step 2: Convert to fraction form
    380,334.72/570,191.04 = 143,542.56/x
  3. Step 3: Cross multiply
    380,334.72x = 570,191.04 × 143,542.56
  4. Step 4: Simplify right side
    380,334.72x = 81,846,681,570.66
  5. Step 5: Solve for x
    x = 81,846,681,570.66/380,334.72
  6. Step 6: Final answer
    x = 215,196.45

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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.