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Finding the Fourth Proportional to 221,243.03, 305,315.28 and 120,641.03

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Solution

The fourth proportional to 221,243.03, 305,315.28 and 120,641.03 is: 166,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,243.03 : 305,315.28 = 120,641.03 : x
  2. Step 2: Convert to fraction form
    221,243.03/305,315.28 = 120,641.03/x
  3. Step 3: Cross multiply
    221,243.03x = 305,315.28 × 120,641.03
  4. Step 4: Simplify right side
    221,243.03x = 36,833,548,327.36
  5. Step 5: Solve for x
    x = 36,833,548,327.36/221,243.03
  6. Step 6: Final answer
    x = 166,484.56

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1.5x scale

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.