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Finding the Fourth Proportional to 221,248.07, 305,321.77 and 120,646.07

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Solution

The fourth proportional to 221,248.07, 305,321.77 and 120,646.07 is: 166,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,248.07 : 305,321.77 = 120,646.07 : x
  2. Step 2: Convert to fraction form
    221,248.07/305,321.77 = 120,646.07/x
  3. Step 3: Cross multiply
    221,248.07x = 305,321.77 × 120,646.07
  4. Step 4: Simplify right side
    221,248.07x = 36,835,871,635.94
  5. Step 5: Solve for x
    x = 36,835,871,635.94/221,248.07
  6. Step 6: Final answer
    x = 166,491.27

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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.