Home / 211,543.11-317,091.78-69,351.30

Finding the Fourth Proportional to 211,543.11, 317,091.78 and 69,351.30

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Solution

The fourth proportional to 211,543.11, 317,091.78 and 69,351.30 is: 103,953.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,543.11 : 317,091.78 = 69,351.30 : x
  2. Step 2: Convert to fraction form
    211,543.11/317,091.78 = 69,351.30/x
  3. Step 3: Cross multiply
    211,543.11x = 317,091.78 × 69,351.30
  4. Step 4: Simplify right side
    211,543.11x = 21,990,727,162.31
  5. Step 5: Solve for x
    x = 21,990,727,162.31/211,543.11
  6. Step 6: Final answer
    x = 103,953.88

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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.