Home / 389,914.80-584,872.20-239,667.90

Finding the Fourth Proportional to 389,914.80, 584,872.20 and 239,667.90

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Solution

The fourth proportional to 389,914.80, 584,872.20 and 239,667.90 is: 359,501.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,914.80 : 584,872.20 = 239,667.90 : x
  2. Step 2: Convert to fraction form
    389,914.80/584,872.20 = 239,667.90/x
  3. Step 3: Cross multiply
    389,914.80x = 584,872.20 × 239,667.90
  4. Step 4: Simplify right side
    389,914.80x = 140,175,091,942.38
  5. Step 5: Solve for x
    x = 140,175,091,942.38/389,914.80
  6. Step 6: Final answer
    x = 359,501.85

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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.