Home / 211,911.61-317,669.78-71,572.09

Finding the Fourth Proportional to 211,911.61, 317,669.78 and 71,572.09

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Solution

The fourth proportional to 211,911.61, 317,669.78 and 71,572.09 is: 107,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,911.61 : 317,669.78 = 71,572.09 : x
  2. Step 2: Convert to fraction form
    211,911.61/317,669.78 = 71,572.09/x
  3. Step 3: Cross multiply
    211,911.61x = 317,669.78 × 71,572.09
  4. Step 4: Simplify right side
    211,911.61x = 22,736,290,084.44
  5. Step 5: Solve for x
    x = 22,736,290,084.44/211,911.61
  6. Step 6: Final answer
    x = 107,291.38

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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.