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Finding the Fourth Proportional to 203,313.66, 280,583.64 and 112,679.52

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Solution

The fourth proportional to 203,313.66, 280,583.64 and 112,679.52 is: 155,503.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,313.66 : 280,583.64 = 112,679.52 : x
  2. Step 2: Convert to fraction form
    203,313.66/280,583.64 = 112,679.52/x
  3. Step 3: Cross multiply
    203,313.66x = 280,583.64 × 112,679.52
  4. Step 4: Simplify right side
    203,313.66x = 31,616,029,875.05
  5. Step 5: Solve for x
    x = 31,616,029,875.05/203,313.66
  6. Step 6: Final answer
    x = 155,503.72

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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.