Home / 272,218.76-408,411.21-139,192.46

Finding the Fourth Proportional to 272,218.76, 408,411.21 and 139,192.46

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Solution

The fourth proportional to 272,218.76, 408,411.21 and 139,192.46 is: 208,831.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,218.76 : 408,411.21 = 139,192.46 : x
  2. Step 2: Convert to fraction form
    272,218.76/408,411.21 = 139,192.46/x
  3. Step 3: Cross multiply
    272,218.76x = 408,411.21 × 139,192.46
  4. Step 4: Simplify right side
    272,218.76x = 56,847,761,022.93
  5. Step 5: Solve for x
    x = 56,847,761,022.93/272,218.76
  6. Step 6: Final answer
    x = 208,831.17

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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.