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Finding the Fourth Proportional to 309,331.80, 463,727.70 and 119,921.40

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Solution

The fourth proportional to 309,331.80, 463,727.70 and 119,921.40 is: 179,777.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,331.80 : 463,727.70 = 119,921.40 : x
  2. Step 2: Convert to fraction form
    309,331.80/463,727.70 = 119,921.40/x
  3. Step 3: Cross multiply
    309,331.80x = 463,727.70 × 119,921.40
  4. Step 4: Simplify right side
    309,331.80x = 55,610,875,002.78
  5. Step 5: Solve for x
    x = 55,610,875,002.78/309,331.80
  6. Step 6: Final answer
    x = 179,777.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.