Home / 378,231.36-521,957.70-208,465.44

Finding the Fourth Proportional to 378,231.36, 521,957.70 and 208,465.44

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Solution

The fourth proportional to 378,231.36, 521,957.70 and 208,465.44 is: 287,681.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,231.36 : 521,957.70 = 208,465.44 : x
  2. Step 2: Convert to fraction form
    378,231.36/521,957.70 = 208,465.44/x
  3. Step 3: Cross multiply
    378,231.36x = 521,957.70 × 208,465.44
  4. Step 4: Simplify right side
    378,231.36x = 108,810,141,591.89
  5. Step 5: Solve for x
    x = 108,810,141,591.89/378,231.36
  6. Step 6: Final answer
    x = 287,681.44

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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.