Home / 215,747.80-323,621.70-137,210.20

Finding the Fourth Proportional to 215,747.80, 323,621.70 and 137,210.20

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Solution

The fourth proportional to 215,747.80, 323,621.70 and 137,210.20 is: 205,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,747.80 : 323,621.70 = 137,210.20 : x
  2. Step 2: Convert to fraction form
    215,747.80/323,621.70 = 137,210.20/x
  3. Step 3: Cross multiply
    215,747.80x = 323,621.70 × 137,210.20
  4. Step 4: Simplify right side
    215,747.80x = 44,404,198,181.34
  5. Step 5: Solve for x
    x = 44,404,198,181.34/215,747.80
  6. Step 6: Final answer
    x = 205,815.30

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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.