Home / 217,784.20-300,521.28-122,269

Finding the Fourth Proportional to 217,784.20, 300,521.28 and 122,269

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Solution

The fourth proportional to 217,784.20, 300,521.28 and 122,269 is: 168,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,784.20 : 300,521.28 = 122,269 : x
  2. Step 2: Convert to fraction form
    217,784.20/300,521.28 = 122,269/x
  3. Step 3: Cross multiply
    217,784.20x = 300,521.28 × 122,269
  4. Step 4: Simplify right side
    217,784.20x = 36,744,436,384.32
  5. Step 5: Solve for x
    x = 36,744,436,384.32/217,784.20
  6. Step 6: Final answer
    x = 168,719.48

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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.