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Finding the Fourth Proportional to 289,900.72, 400,062.22 and 162,579.05

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Solution

The fourth proportional to 289,900.72, 400,062.22 and 162,579.05 is: 224,358.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,900.72 : 400,062.22 = 162,579.05 : x
  2. Step 2: Convert to fraction form
    289,900.72/400,062.22 = 162,579.05/x
  3. Step 3: Cross multiply
    289,900.72x = 400,062.22 × 162,579.05
  4. Step 4: Simplify right side
    289,900.72x = 65,041,733,668.18
  5. Step 5: Solve for x
    x = 65,041,733,668.18/289,900.72
  6. Step 6: Final answer
    x = 224,358.65

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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.