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Finding the Fourth Proportional to 309,246.31, 426,320.82 and 227,429.95

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Solution

The fourth proportional to 309,246.31, 426,320.82 and 227,429.95 is: 313,530.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,246.31 : 426,320.82 = 227,429.95 : x
  2. Step 2: Convert to fraction form
    309,246.31/426,320.82 = 227,429.95/x
  3. Step 3: Cross multiply
    309,246.31x = 426,320.82 × 227,429.95
  4. Step 4: Simplify right side
    309,246.31x = 96,958,122,776.56
  5. Step 5: Solve for x
    x = 96,958,122,776.56/309,246.31
  6. Step 6: Final answer
    x = 313,530.41

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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.