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Finding the Fourth Proportional to 255,511.79, 383,606.80 and 218,310.92

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Solution

The fourth proportional to 255,511.79, 383,606.80 and 218,310.92 is: 327,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,511.79 : 383,606.80 = 218,310.92 : x
  2. Step 2: Convert to fraction form
    255,511.79/383,606.80 = 218,310.92/x
  3. Step 3: Cross multiply
    255,511.79x = 383,606.80 × 218,310.92
  4. Step 4: Simplify right side
    255,511.79x = 83,745,551,508.22
  5. Step 5: Solve for x
    x = 83,745,551,508.22/255,511.79
  6. Step 6: Final answer
    x = 327,756.12

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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.