Home / 378,516.08-522,329.64-217,397.36

Finding the Fourth Proportional to 378,516.08, 522,329.64 and 217,397.36

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Solution

The fourth proportional to 378,516.08, 522,329.64 and 217,397.36 is: 299,995.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,516.08 : 522,329.64 = 217,397.36 : x
  2. Step 2: Convert to fraction form
    378,516.08/522,329.64 = 217,397.36/x
  3. Step 3: Cross multiply
    378,516.08x = 522,329.64 × 217,397.36
  4. Step 4: Simplify right side
    378,516.08x = 113,553,084,785.75
  5. Step 5: Solve for x
    x = 113,553,084,785.75/378,516.08
  6. Step 6: Final answer
    x = 299,995.41

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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.