Home / 379,608.31-523,838.91-209,831.50

Finding the Fourth Proportional to 379,608.31, 523,838.91 and 209,831.50

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Solution

The fourth proportional to 379,608.31, 523,838.91 and 209,831.50 is: 289,556.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,608.31 : 523,838.91 = 209,831.50 : x
  2. Step 2: Convert to fraction form
    379,608.31/523,838.91 = 209,831.50/x
  3. Step 3: Cross multiply
    379,608.31x = 523,838.91 × 209,831.50
  4. Step 4: Simplify right side
    379,608.31x = 109,917,904,243.67
  5. Step 5: Solve for x
    x = 109,917,904,243.67/379,608.31
  6. Step 6: Final answer
    x = 289,556.11

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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.