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Finding the Fourth Proportional to 347,605, 479,694.90 and 188,629

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Solution

The fourth proportional to 347,605, 479,694.90 and 188,629 is: 260,308.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,605 : 479,694.90 = 188,629 : x
  2. Step 2: Convert to fraction form
    347,605/479,694.90 = 188,629/x
  3. Step 3: Cross multiply
    347,605x = 479,694.90 × 188,629
  4. Step 4: Simplify right side
    347,605x = 90,484,369,292.10
  5. Step 5: Solve for x
    x = 90,484,369,292.10/347,605
  6. Step 6: Final answer
    x = 260,308.02

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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.