Home / 211,993.12-317,297.36-155,818.40

Finding the Fourth Proportional to 211,993.12, 317,297.36 and 155,818.40

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Solution

The fourth proportional to 211,993.12, 317,297.36 and 155,818.40 is: 233,218.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,993.12 : 317,297.36 = 155,818.40 : x
  2. Step 2: Convert to fraction form
    211,993.12/317,297.36 = 155,818.40/x
  3. Step 3: Cross multiply
    211,993.12x = 317,297.36 × 155,818.40
  4. Step 4: Simplify right side
    211,993.12x = 49,440,766,959.42
  5. Step 5: Solve for x
    x = 49,440,766,959.42/211,993.12
  6. Step 6: Final answer
    x = 233,218.73

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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.