Home / 211,418.28-317,078.88-126,053.28

Finding the Fourth Proportional to 211,418.28, 317,078.88 and 126,053.28

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Solution

The fourth proportional to 211,418.28, 317,078.88 and 126,053.28 is: 189,050.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,418.28 : 317,078.88 = 126,053.28 : x
  2. Step 2: Convert to fraction form
    211,418.28/317,078.88 = 126,053.28/x
  3. Step 3: Cross multiply
    211,418.28x = 317,078.88 × 126,053.28
  4. Step 4: Simplify right side
    211,418.28x = 39,968,832,842.73
  5. Step 5: Solve for x
    x = 39,968,832,842.73/211,418.28
  6. Step 6: Final answer
    x = 189,050.98

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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.