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Finding the Fourth Proportional to 203,497.02, 280,840.32 and 112,861.65

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Solution

The fourth proportional to 203,497.02, 280,840.32 and 112,861.65 is: 155,757.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,497.02 : 280,840.32 = 112,861.65 : x
  2. Step 2: Convert to fraction form
    203,497.02/280,840.32 = 112,861.65/x
  3. Step 3: Cross multiply
    203,497.02x = 280,840.32 × 112,861.65
  4. Step 4: Simplify right side
    203,497.02x = 31,696,101,901.73
  5. Step 5: Solve for x
    x = 31,696,101,901.73/203,497.02
  6. Step 6: Final answer
    x = 155,757.08

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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.