Home / 379,678.77-523,967.27-209,923.83

Finding the Fourth Proportional to 379,678.77, 523,967.27 and 209,923.83

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Solution

The fourth proportional to 379,678.77, 523,967.27 and 209,923.83 is: 289,700.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,678.77 : 523,967.27 = 209,923.83 : x
  2. Step 2: Convert to fraction form
    379,678.77/523,967.27 = 209,923.83/x
  3. Step 3: Cross multiply
    379,678.77x = 523,967.27 × 209,923.83
  4. Step 4: Simplify right side
    379,678.77x = 109,993,215,063.43
  5. Step 5: Solve for x
    x = 109,993,215,063.43/379,678.77
  6. Step 6: Final answer
    x = 289,700.73

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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.