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Finding the Fourth Proportional to 203,281.65, 280,796.22 and 156,117.78

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Solution

The fourth proportional to 203,281.65, 280,796.22 and 156,117.78 is: 215,648.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,281.65 : 280,796.22 = 156,117.78 : x
  2. Step 2: Convert to fraction form
    203,281.65/280,796.22 = 156,117.78/x
  3. Step 3: Cross multiply
    203,281.65x = 280,796.22 × 156,117.78
  4. Step 4: Simplify right side
    203,281.65x = 43,837,282,498.79
  5. Step 5: Solve for x
    x = 43,837,282,498.79/203,281.65
  6. Step 6: Final answer
    x = 215,648.01

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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.