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Finding the Fourth Proportional to 208,404.68, 312,621.46 and 83,745.72

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Solution

The fourth proportional to 208,404.68, 312,621.46 and 83,745.72 is: 125,624.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,404.68 : 312,621.46 = 83,745.72 : x
  2. Step 2: Convert to fraction form
    208,404.68/312,621.46 = 83,745.72/x
  3. Step 3: Cross multiply
    208,404.68x = 312,621.46 × 83,745.72
  4. Step 4: Simplify right side
    208,404.68x = 26,180,709,255.15
  5. Step 5: Solve for x
    x = 26,180,709,255.15/208,404.68
  6. Step 6: Final answer
    x = 125,624.38

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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.