Home / 379,636.24-523,871.70-209,857

Finding the Fourth Proportional to 379,636.24, 523,871.70 and 209,857

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Solution

The fourth proportional to 379,636.24, 523,871.70 and 209,857 is: 289,588.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,636.24 : 523,871.70 = 209,857 : x
  2. Step 2: Convert to fraction form
    379,636.24/523,871.70 = 209,857/x
  3. Step 3: Cross multiply
    379,636.24x = 523,871.70 × 209,857
  4. Step 4: Simplify right side
    379,636.24x = 109,938,143,346.90
  5. Step 5: Solve for x
    x = 109,938,143,346.90/379,636.24
  6. Step 6: Final answer
    x = 289,588.12

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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.