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Finding the Fourth Proportional to 203,437.88, 280,760.82 and 112,802.84

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Solution

The fourth proportional to 203,437.88, 280,760.82 and 112,802.84 is: 155,677.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,437.88 : 280,760.82 = 112,802.84 : x
  2. Step 2: Convert to fraction form
    203,437.88/280,760.82 = 112,802.84/x
  3. Step 3: Cross multiply
    203,437.88x = 280,760.82 × 112,802.84
  4. Step 4: Simplify right side
    203,437.88x = 31,670,617,856.73
  5. Step 5: Solve for x
    x = 31,670,617,856.73/203,437.88
  6. Step 6: Final answer
    x = 155,677.09

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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.