Home / 378,284.13-522,032.10-208,521.90

Finding the Fourth Proportional to 378,284.13, 522,032.10 and 208,521.90

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Solution

The fourth proportional to 378,284.13, 522,032.10 and 208,521.90 is: 287,760.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,284.13 : 522,032.10 = 208,521.90 : x
  2. Step 2: Convert to fraction form
    378,284.13/522,032.10 = 208,521.90/x
  3. Step 3: Cross multiply
    378,284.13x = 522,032.10 × 208,521.90
  4. Step 4: Simplify right side
    378,284.13x = 108,855,125,352.99
  5. Step 5: Solve for x
    x = 108,855,125,352.99/378,284.13
  6. Step 6: Final answer
    x = 287,760.22

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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.