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Finding the Fourth Proportional to 402,777.44, 555,831.96 and 221,500.52

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Solution

The fourth proportional to 402,777.44, 555,831.96 and 221,500.52 is: 305,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,777.44 : 555,831.96 = 221,500.52 : x
  2. Step 2: Convert to fraction form
    402,777.44/555,831.96 = 221,500.52/x
  3. Step 3: Cross multiply
    402,777.44x = 555,831.96 × 221,500.52
  4. Step 4: Simplify right side
    402,777.44x = 123,117,068,172.62
  5. Step 5: Solve for x
    x = 123,117,068,172.62/402,777.44
  6. Step 6: Final answer
    x = 305,670.22

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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.