Home / 211,965.87-317,256.53-155,791.11

Finding the Fourth Proportional to 211,965.87, 317,256.53 and 155,791.11

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Solution

The fourth proportional to 211,965.87, 317,256.53 and 155,791.11 is: 233,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,965.87 : 317,256.53 = 155,791.11 : x
  2. Step 2: Convert to fraction form
    211,965.87/317,256.53 = 155,791.11/x
  3. Step 3: Cross multiply
    211,965.87x = 317,256.53 × 155,791.11
  4. Step 4: Simplify right side
    211,965.87x = 49,425,746,184.49
  5. Step 5: Solve for x
    x = 49,425,746,184.49/211,965.87
  6. Step 6: Final answer
    x = 233,177.85

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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.