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Finding the Fourth Proportional to 268,491.20, 402,715.72 and 156,099.75

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Solution

The fourth proportional to 268,491.20, 402,715.72 and 156,099.75 is: 234,137.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,491.20 : 402,715.72 = 156,099.75 : x
  2. Step 2: Convert to fraction form
    268,491.20/402,715.72 = 156,099.75/x
  3. Step 3: Cross multiply
    268,491.20x = 402,715.72 × 156,099.75
  4. Step 4: Simplify right side
    268,491.20x = 62,863,823,213.07
  5. Step 5: Solve for x
    x = 62,863,823,213.07/268,491.20
  6. Step 6: Final answer
    x = 234,137.37

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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.