Home / 380,356.12-570,540.66-143,810.20

Finding the Fourth Proportional to 380,356.12, 570,540.66 and 143,810.20

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Solution

The fourth proportional to 380,356.12, 570,540.66 and 143,810.20 is: 215,717.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,356.12 : 570,540.66 = 143,810.20 : x
  2. Step 2: Convert to fraction form
    380,356.12/570,540.66 = 143,810.20/x
  3. Step 3: Cross multiply
    380,356.12x = 570,540.66 × 143,810.20
  4. Step 4: Simplify right side
    380,356.12x = 82,049,566,422.73
  5. Step 5: Solve for x
    x = 82,049,566,422.73/380,356.12
  6. Step 6: Final answer
    x = 215,717.75

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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.