Home / 379,001.38-523,011.90-209,231.86

Finding the Fourth Proportional to 379,001.38, 523,011.90 and 209,231.86

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Solution

The fourth proportional to 379,001.38, 523,011.90 and 209,231.86 is: 288,734.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,001.38 : 523,011.90 = 209,231.86 : x
  2. Step 2: Convert to fraction form
    379,001.38/523,011.90 = 209,231.86/x
  3. Step 3: Cross multiply
    379,001.38x = 523,011.90 × 209,231.86
  4. Step 4: Simplify right side
    379,001.38x = 109,430,752,639.13
  5. Step 5: Solve for x
    x = 109,430,752,639.13/379,001.38
  6. Step 6: Final answer
    x = 288,734.44

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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.