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Finding the Fourth Proportional to 400,846.56, 553,167.66 and 219,558.72

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Solution

The fourth proportional to 400,846.56, 553,167.66 and 219,558.72 is: 302,990.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,846.56 : 553,167.66 = 219,558.72 : x
  2. Step 2: Convert to fraction form
    400,846.56/553,167.66 = 219,558.72/x
  3. Step 3: Cross multiply
    400,846.56x = 553,167.66 × 219,558.72
  4. Step 4: Simplify right side
    400,846.56x = 121,452,783,375.00
  5. Step 5: Solve for x
    x = 121,452,783,375.00/400,846.56
  6. Step 6: Final answer
    x = 302,990.71

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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.