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Finding the Fourth Proportional to 426,722.03, 640,397.99 and 202,082.03

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Solution

The fourth proportional to 426,722.03, 640,397.99 and 202,082.03 is: 303,272.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,722.03 : 640,397.99 = 202,082.03 : x
  2. Step 2: Convert to fraction form
    426,722.03/640,397.99 = 202,082.03/x
  3. Step 3: Cross multiply
    426,722.03x = 640,397.99 × 202,082.03
  4. Step 4: Simplify right side
    426,722.03x = 129,412,921,614.72
  5. Step 5: Solve for x
    x = 129,412,921,614.72/426,722.03
  6. Step 6: Final answer
    x = 303,272.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.