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Finding the Fourth Proportional to 203,349.60, 280,622.49 and 112,711.41

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Solution

The fourth proportional to 203,349.60, 280,622.49 and 112,711.41 is: 155,541.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,349.60 : 280,622.49 = 112,711.41 : x
  2. Step 2: Convert to fraction form
    203,349.60/280,622.49 = 112,711.41/x
  3. Step 3: Cross multiply
    203,349.60x = 280,622.49 × 112,711.41
  4. Step 4: Simplify right side
    203,349.60x = 31,629,356,525.61
  5. Step 5: Solve for x
    x = 31,629,356,525.61/203,349.60
  6. Step 6: Final answer
    x = 155,541.77

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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.