Home / 399,831.76-551,761.32-218,541.52

Finding the Fourth Proportional to 399,831.76, 551,761.32 and 218,541.52

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Solution

The fourth proportional to 399,831.76, 551,761.32 and 218,541.52 is: 301,583.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,831.76 : 551,761.32 = 218,541.52 : x
  2. Step 2: Convert to fraction form
    399,831.76/551,761.32 = 218,541.52/x
  3. Step 3: Cross multiply
    399,831.76x = 551,761.32 × 218,541.52
  4. Step 4: Simplify right side
    399,831.76x = 120,582,757,550.01
  5. Step 5: Solve for x
    x = 120,582,757,550.01/399,831.76
  6. Step 6: Final answer
    x = 301,583.74

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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.