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Finding the Fourth Proportional to 379,101.52, 523,153.11 and 209,332

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Solution

The fourth proportional to 379,101.52, 523,153.11 and 209,332 is: 288,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,101.52 : 523,153.11 = 209,332 : x
  2. Step 2: Convert to fraction form
    379,101.52/523,153.11 = 209,332/x
  3. Step 3: Cross multiply
    379,101.52x = 523,153.11 × 209,332
  4. Step 4: Simplify right side
    379,101.52x = 109,512,686,822.52
  5. Step 5: Solve for x
    x = 109,512,686,822.52/379,101.52
  6. Step 6: Final answer
    x = 288,874.30

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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.