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Finding the Fourth Proportional to 379,473.81, 523,653.24 and 209,697

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Solution

The fourth proportional to 379,473.81, 523,653.24 and 209,697 is: 289,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,473.81 : 523,653.24 = 209,697 : x
  2. Step 2: Convert to fraction form
    379,473.81/523,653.24 = 209,697/x
  3. Step 3: Cross multiply
    379,473.81x = 523,653.24 × 209,697
  4. Step 4: Simplify right side
    379,473.81x = 109,808,513,468.28
  5. Step 5: Solve for x
    x = 109,808,513,468.28/379,473.81
  6. Step 6: Final answer
    x = 289,370.47

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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.