Home / 317,519.52-438,198.84-209,902.92

Finding the Fourth Proportional to 317,519.52, 438,198.84 and 209,902.92

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Solution

The fourth proportional to 317,519.52, 438,198.84 and 209,902.92 is: 289,680.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,519.52 : 438,198.84 = 209,902.92 : x
  2. Step 2: Convert to fraction form
    317,519.52/438,198.84 = 209,902.92/x
  3. Step 3: Cross multiply
    317,519.52x = 438,198.84 × 209,902.92
  4. Step 4: Simplify right side
    317,519.52x = 91,979,216,056.61
  5. Step 5: Solve for x
    x = 91,979,216,056.61/317,519.52
  6. Step 6: Final answer
    x = 289,680.51

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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.