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Finding the Fourth Proportional to 379,362.91, 523,514.58 and 209,612.83

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Solution

The fourth proportional to 379,362.91, 523,514.58 and 209,612.83 is: 289,262.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,362.91 : 523,514.58 = 209,612.83 : x
  2. Step 2: Convert to fraction form
    379,362.91/523,514.58 = 209,612.83/x
  3. Step 3: Cross multiply
    379,362.91x = 523,514.58 × 209,612.83
  4. Step 4: Simplify right side
    379,362.91x = 109,735,372,660.06
  5. Step 5: Solve for x
    x = 109,735,372,660.06/379,362.91
  6. Step 6: Final answer
    x = 289,262.26

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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.