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Finding the Fourth Proportional to 212,624.92, 318,826.68 and 79,395.64

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Solution

The fourth proportional to 212,624.92, 318,826.68 and 79,395.64 is: 119,052.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,624.92 : 318,826.68 = 79,395.64 : x
  2. Step 2: Convert to fraction form
    212,624.92/318,826.68 = 79,395.64/x
  3. Step 3: Cross multiply
    212,624.92x = 318,826.68 × 79,395.64
  4. Step 4: Simplify right side
    212,624.92x = 25,313,448,307.68
  5. Step 5: Solve for x
    x = 25,313,448,307.68/212,624.92
  6. Step 6: Final answer
    x = 119,052.12

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1.5x scale

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.