Home / 290,864.28-436,212.12-113,331.72

Finding the Fourth Proportional to 290,864.28, 436,212.12 and 113,331.72

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Solution

The fourth proportional to 290,864.28, 436,212.12 and 113,331.72 is: 169,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,864.28 : 436,212.12 = 113,331.72 : x
  2. Step 2: Convert to fraction form
    290,864.28/436,212.12 = 113,331.72/x
  3. Step 3: Cross multiply
    290,864.28x = 436,212.12 × 113,331.72
  4. Step 4: Simplify right side
    290,864.28x = 49,436,669,844.45
  5. Step 5: Solve for x
    x = 49,436,669,844.45/290,864.28
  6. Step 6: Final answer
    x = 169,964.73

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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.