Home / 400,912.12-553,257.10-219,623.79

Finding the Fourth Proportional to 400,912.12, 553,257.10 and 219,623.79

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Solution

The fourth proportional to 400,912.12, 553,257.10 and 219,623.79 is: 303,079.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,912.12 : 553,257.10 = 219,623.79 : x
  2. Step 2: Convert to fraction form
    400,912.12/553,257.10 = 219,623.79/x
  3. Step 3: Cross multiply
    400,912.12x = 553,257.10 × 219,623.79
  4. Step 4: Simplify right side
    400,912.12x = 121,508,421,146.41
  5. Step 5: Solve for x
    x = 121,508,421,146.41/400,912.12
  6. Step 6: Final answer
    x = 303,079.94

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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.