Home / 391,929.48-587,831.28-107,553.61

Finding the Fourth Proportional to 391,929.48, 587,831.28 and 107,553.61

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Solution

The fourth proportional to 391,929.48, 587,831.28 and 107,553.61 is: 161,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,929.48 : 587,831.28 = 107,553.61 : x
  2. Step 2: Convert to fraction form
    391,929.48/587,831.28 = 107,553.61/x
  3. Step 3: Cross multiply
    391,929.48x = 587,831.28 × 107,553.61
  4. Step 4: Simplify right side
    391,929.48x = 63,223,376,234.92
  5. Step 5: Solve for x
    x = 63,223,376,234.92/391,929.48
  6. Step 6: Final answer
    x = 161,313.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.