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Finding the Fourth Proportional to 311,315.20, 466,998.72 and 124,224.64

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Solution

The fourth proportional to 311,315.20, 466,998.72 and 124,224.64 is: 186,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,315.20 : 466,998.72 = 124,224.64 : x
  2. Step 2: Convert to fraction form
    311,315.20/466,998.72 = 124,224.64/x
  3. Step 3: Cross multiply
    311,315.20x = 466,998.72 × 124,224.64
  4. Step 4: Simplify right side
    311,315.20x = 58,012,747,872.46
  5. Step 5: Solve for x
    x = 58,012,747,872.46/311,315.20
  6. Step 6: Final answer
    x = 186,347.30

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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.