Home / 203,306.10-280,396.71-143,076.30

Finding the Fourth Proportional to 203,306.10, 280,396.71 and 143,076.30

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Solution

The fourth proportional to 203,306.10, 280,396.71 and 143,076.30 is: 197,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,306.10 : 280,396.71 = 143,076.30 : x
  2. Step 2: Convert to fraction form
    203,306.10/280,396.71 = 143,076.30/x
  3. Step 3: Cross multiply
    203,306.10x = 280,396.71 × 143,076.30
  4. Step 4: Simplify right side
    203,306.10x = 40,118,123,798.97
  5. Step 5: Solve for x
    x = 40,118,123,798.97/203,306.10
  6. Step 6: Final answer
    x = 197,328.68

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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.