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Finding the Fourth Proportional to 220,090.72, 303,911.28 and 139,660.96

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Solution

The fourth proportional to 220,090.72, 303,911.28 and 139,660.96 is: 192,850.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,090.72 : 303,911.28 = 139,660.96 : x
  2. Step 2: Convert to fraction form
    220,090.72/303,911.28 = 139,660.96/x
  3. Step 3: Cross multiply
    220,090.72x = 303,911.28 × 139,660.96
  4. Step 4: Simplify right side
    220,090.72x = 42,444,541,119.63
  5. Step 5: Solve for x
    x = 42,444,541,119.63/220,090.72
  6. Step 6: Final answer
    x = 192,850.21

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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.