Home / 379,700.24-523,940.52-209,911.28

Finding the Fourth Proportional to 379,700.24, 523,940.52 and 209,911.28

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Solution

The fourth proportional to 379,700.24, 523,940.52 and 209,911.28 is: 289,652.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,700.24 : 523,940.52 = 209,911.28 : x
  2. Step 2: Convert to fraction form
    379,700.24/523,940.52 = 209,911.28/x
  3. Step 3: Cross multiply
    379,700.24x = 523,940.52 × 209,911.28
  4. Step 4: Simplify right side
    379,700.24x = 109,981,025,197.07
  5. Step 5: Solve for x
    x = 109,981,025,197.07/379,700.24
  6. Step 6: Final answer
    x = 289,652.24

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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.