Home / 378,223.28-521,951.52-208,463.36

Finding the Fourth Proportional to 378,223.28, 521,951.52 and 208,463.36

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Solution

The fourth proportional to 378,223.28, 521,951.52 and 208,463.36 is: 287,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,223.28 : 521,951.52 = 208,463.36 : x
  2. Step 2: Convert to fraction form
    378,223.28/521,951.52 = 208,463.36/x
  3. Step 3: Cross multiply
    378,223.28x = 521,951.52 × 208,463.36
  4. Step 4: Simplify right side
    378,223.28x = 108,807,767,616.31
  5. Step 5: Solve for x
    x = 108,807,767,616.31/378,223.28
  6. Step 6: Final answer
    x = 287,681.31

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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.