Home / 215,865.80-323,453.10-136,838.60

Finding the Fourth Proportional to 215,865.80, 323,453.10 and 136,838.60

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Solution

The fourth proportional to 215,865.80, 323,453.10 and 136,838.60 is: 205,038.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,865.80 : 323,453.10 = 136,838.60 : x
  2. Step 2: Convert to fraction form
    215,865.80/323,453.10 = 136,838.60/x
  3. Step 3: Cross multiply
    215,865.80x = 323,453.10 × 136,838.60
  4. Step 4: Simplify right side
    215,865.80x = 44,260,869,369.66
  5. Step 5: Solve for x
    x = 44,260,869,369.66/215,865.80
  6. Step 6: Final answer
    x = 205,038.82

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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.