Home / 407,540.12-611,171.74-141,238.40

Finding the Fourth Proportional to 407,540.12, 611,171.74 and 141,238.40

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Solution

The fourth proportional to 407,540.12, 611,171.74 and 141,238.40 is: 211,809.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,540.12 : 611,171.74 = 141,238.40 : x
  2. Step 2: Convert to fraction form
    407,540.12/611,171.74 = 141,238.40/x
  3. Step 3: Cross multiply
    407,540.12x = 611,171.74 × 141,238.40
  4. Step 4: Simplify right side
    407,540.12x = 86,320,918,682.82
  5. Step 5: Solve for x
    x = 86,320,918,682.82/407,540.12
  6. Step 6: Final answer
    x = 211,809.62

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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.