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Finding the Fourth Proportional to 203,499.55, 280,843.68 and 112,864.15

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Solution

The fourth proportional to 203,499.55, 280,843.68 and 112,864.15 is: 155,760.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,499.55 : 280,843.68 = 112,864.15 : x
  2. Step 2: Convert to fraction form
    203,499.55/280,843.68 = 112,864.15/x
  3. Step 3: Cross multiply
    203,499.55x = 280,843.68 × 112,864.15
  4. Step 4: Simplify right side
    203,499.55x = 31,697,183,226.07
  5. Step 5: Solve for x
    x = 31,697,183,226.07/203,499.55
  6. Step 6: Final answer
    x = 155,760.46

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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.