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Finding the Fourth Proportional to 379,000.38, 523,010.52 and 209,230.86

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Solution

The fourth proportional to 379,000.38, 523,010.52 and 209,230.86 is: 288,733.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,000.38 : 523,010.52 = 209,230.86 : x
  2. Step 2: Convert to fraction form
    379,000.38/523,010.52 = 209,230.86/x
  3. Step 3: Cross multiply
    379,000.38x = 523,010.52 × 209,230.86
  4. Step 4: Simplify right side
    379,000.38x = 109,429,940,888.65
  5. Step 5: Solve for x
    x = 109,429,940,888.65/379,000.38
  6. Step 6: Final answer
    x = 288,733.06

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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.