Home / 378,638.28-522,522.54-208,872.36

Finding the Fourth Proportional to 378,638.28, 522,522.54 and 208,872.36

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Solution

The fourth proportional to 378,638.28, 522,522.54 and 208,872.36 is: 288,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,638.28 : 522,522.54 = 208,872.36 : x
  2. Step 2: Convert to fraction form
    378,638.28/522,522.54 = 208,872.36/x
  3. Step 3: Cross multiply
    378,638.28x = 522,522.54 × 208,872.36
  4. Step 4: Simplify right side
    378,638.28x = 109,140,516,082.99
  5. Step 5: Solve for x
    x = 109,140,516,082.99/378,638.28
  6. Step 6: Final answer
    x = 288,244.80

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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.