Home / 311,895.12-430,417.83-172,198.22

Finding the Fourth Proportional to 311,895.12, 430,417.83 and 172,198.22

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Solution

The fourth proportional to 311,895.12, 430,417.83 and 172,198.22 is: 237,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,895.12 : 430,417.83 = 172,198.22 : x
  2. Step 2: Convert to fraction form
    311,895.12/430,417.83 = 172,198.22/x
  3. Step 3: Cross multiply
    311,895.12x = 430,417.83 × 172,198.22
  4. Step 4: Simplify right side
    311,895.12x = 74,117,182,030.17
  5. Step 5: Solve for x
    x = 74,117,182,030.17/311,895.12
  6. Step 6: Final answer
    x = 237,634.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.