Home / 378,944.70-522,943.79-209,178.83

Finding the Fourth Proportional to 378,944.70, 522,943.79 and 209,178.83

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Solution

The fourth proportional to 378,944.70, 522,943.79 and 209,178.83 is: 288,666.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,944.70 : 522,943.79 = 209,178.83 : x
  2. Step 2: Convert to fraction form
    378,944.70/522,943.79 = 209,178.83/x
  3. Step 3: Cross multiply
    378,944.70x = 522,943.79 × 209,178.83
  4. Step 4: Simplify right side
    378,944.70x = 109,388,766,487.35
  5. Step 5: Solve for x
    x = 109,388,766,487.35/378,944.70
  6. Step 6: Final answer
    x = 288,666.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.