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Finding the Fourth Proportional to 379,173.42, 523,262.43 and 209,410.38

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Solution

The fourth proportional to 379,173.42, 523,262.43 and 209,410.38 is: 288,988.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,173.42 : 523,262.43 = 209,410.38 : x
  2. Step 2: Convert to fraction form
    379,173.42/523,262.43 = 209,410.38/x
  3. Step 3: Cross multiply
    379,173.42x = 523,262.43 × 209,410.38
  4. Step 4: Simplify right side
    379,173.42x = 109,576,584,306.02
  5. Step 5: Solve for x
    x = 109,576,584,306.02/379,173.42
  6. Step 6: Final answer
    x = 288,988.04

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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.