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Finding the Fourth Proportional to 402,750.99, 555,831.79 and 221,494.86

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Solution

The fourth proportional to 402,750.99, 555,831.79 and 221,494.86 is: 305,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,750.99 : 555,831.79 = 221,494.86 : x
  2. Step 2: Convert to fraction form
    402,750.99/555,831.79 = 221,494.86/x
  3. Step 3: Cross multiply
    402,750.99x = 555,831.79 × 221,494.86
  4. Step 4: Simplify right side
    402,750.99x = 123,113,883,955.86
  5. Step 5: Solve for x
    x = 123,113,883,955.86/402,750.99
  6. Step 6: Final answer
    x = 305,682.39

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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.