Home / 211,530.95-317,297.51-71,290.79

Finding the Fourth Proportional to 211,530.95, 317,297.51 and 71,290.79

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Solution

The fourth proportional to 211,530.95, 317,297.51 and 71,290.79 is: 106,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,530.95 : 317,297.51 = 71,290.79 : x
  2. Step 2: Convert to fraction form
    211,530.95/317,297.51 = 71,290.79/x
  3. Step 3: Cross multiply
    211,530.95x = 317,297.51 × 71,290.79
  4. Step 4: Simplify right side
    211,530.95x = 22,620,388,744.67
  5. Step 5: Solve for x
    x = 22,620,388,744.67/211,530.95
  6. Step 6: Final answer
    x = 106,936.55

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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.