Home / 378,318.16-522,083.10-208,558.36

Finding the Fourth Proportional to 378,318.16, 522,083.10 and 208,558.36

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Solution

The fourth proportional to 378,318.16, 522,083.10 and 208,558.36 is: 287,812.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,318.16 : 522,083.10 = 208,558.36 : x
  2. Step 2: Convert to fraction form
    378,318.16/522,083.10 = 208,558.36/x
  3. Step 3: Cross multiply
    378,318.16x = 522,083.10 × 208,558.36
  4. Step 4: Simplify right side
    378,318.16x = 108,884,795,119.72
  5. Step 5: Solve for x
    x = 108,884,795,119.72/378,318.16
  6. Step 6: Final answer
    x = 287,812.76

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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.