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Finding the Fourth Proportional to 268,045.70, 401,509.65 and 126,012.20

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Solution

The fourth proportional to 268,045.70, 401,509.65 and 126,012.20 is: 188,755.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,045.70 : 401,509.65 = 126,012.20 : x
  2. Step 2: Convert to fraction form
    268,045.70/401,509.65 = 126,012.20/x
  3. Step 3: Cross multiply
    268,045.70x = 401,509.65 × 126,012.20
  4. Step 4: Simplify right side
    268,045.70x = 50,595,114,317.73
  5. Step 5: Solve for x
    x = 50,595,114,317.73/268,045.70
  6. Step 6: Final answer
    x = 188,755.55

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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.