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Finding the Fourth Proportional to 203,435.79, 280,727.68 and 117,398.35

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Solution

The fourth proportional to 203,435.79, 280,727.68 and 117,398.35 is: 162,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,435.79 : 280,727.68 = 117,398.35 : x
  2. Step 2: Convert to fraction form
    203,435.79/280,727.68 = 117,398.35/x
  3. Step 3: Cross multiply
    203,435.79x = 280,727.68 × 117,398.35
  4. Step 4: Simplify right side
    203,435.79x = 32,956,966,431.33
  5. Step 5: Solve for x
    x = 32,956,966,431.33/203,435.79
  6. Step 6: Final answer
    x = 162,001.81

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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.