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Finding the Fourth Proportional to 379,672.48, 523,901.84 and 209,883.04

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Solution

The fourth proportional to 379,672.48, 523,901.84 and 209,883.04 is: 289,613.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,672.48 : 523,901.84 = 209,883.04 : x
  2. Step 2: Convert to fraction form
    379,672.48/523,901.84 = 209,883.04/x
  3. Step 3: Cross multiply
    379,672.48x = 523,901.84 × 209,883.04
  4. Step 4: Simplify right side
    379,672.48x = 109,958,110,840.79
  5. Step 5: Solve for x
    x = 109,958,110,840.79/379,672.48
  6. Step 6: Final answer
    x = 289,613.07

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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.