Home / 638,832.80-958,249.20-218,045.60

Finding the Fourth Proportional to 638,832.80, 958,249.20 and 218,045.60

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Solution

The fourth proportional to 638,832.80, 958,249.20 and 218,045.60 is: 327,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,832.80 : 958,249.20 = 218,045.60 : x
  2. Step 2: Convert to fraction form
    638,832.80/958,249.20 = 218,045.60/x
  3. Step 3: Cross multiply
    638,832.80x = 958,249.20 × 218,045.60
  4. Step 4: Simplify right side
    638,832.80x = 208,942,021,763.52
  5. Step 5: Solve for x
    x = 208,942,021,763.52/638,832.80
  6. Step 6: Final answer
    x = 327,068.40

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Similar ratio
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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.