Home / 211,518.06-317,306.25-71,316.78

Finding the Fourth Proportional to 211,518.06, 317,306.25 and 71,316.78

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Solution

The fourth proportional to 211,518.06, 317,306.25 and 71,316.78 is: 106,985.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,518.06 : 317,306.25 = 71,316.78 : x
  2. Step 2: Convert to fraction form
    211,518.06/317,306.25 = 71,316.78/x
  3. Step 3: Cross multiply
    211,518.06x = 317,306.25 × 71,316.78
  4. Step 4: Simplify right side
    211,518.06x = 22,629,260,023.88
  5. Step 5: Solve for x
    x = 22,629,260,023.88/211,518.06
  6. Step 6: Final answer
    x = 106,985.00

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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.