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Finding the Fourth Proportional to 203,419.71, 280,735.83 and 112,804.10

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Solution

The fourth proportional to 203,419.71, 280,735.83 and 112,804.10 is: 155,678.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,419.71 : 280,735.83 = 112,804.10 : x
  2. Step 2: Convert to fraction form
    203,419.71/280,735.83 = 112,804.10/x
  3. Step 3: Cross multiply
    203,419.71x = 280,735.83 × 112,804.10
  4. Step 4: Simplify right side
    203,419.71x = 31,668,151,237.22
  5. Step 5: Solve for x
    x = 31,668,151,237.22/203,419.71
  6. Step 6: Final answer
    x = 155,678.87

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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.