Home / 215,113.46-322,720.65-211,543.18

Finding the Fourth Proportional to 215,113.46, 322,720.65 and 211,543.18

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Solution

The fourth proportional to 215,113.46, 322,720.65 and 211,543.18 is: 317,364.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,113.46 : 322,720.65 = 211,543.18 : x
  2. Step 2: Convert to fraction form
    215,113.46/322,720.65 = 211,543.18/x
  3. Step 3: Cross multiply
    215,113.46x = 322,720.65 × 211,543.18
  4. Step 4: Simplify right side
    215,113.46x = 68,269,351,745.87
  5. Step 5: Solve for x
    x = 68,269,351,745.87/215,113.46
  6. Step 6: Final answer
    x = 317,364.40

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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.