Home / 658,104.72-987,196.08-208,817.28

Finding the Fourth Proportional to 658,104.72, 987,196.08 and 208,817.28

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Solution

The fourth proportional to 658,104.72, 987,196.08 and 208,817.28 is: 313,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,104.72 : 987,196.08 = 208,817.28 : x
  2. Step 2: Convert to fraction form
    658,104.72/987,196.08 = 208,817.28/x
  3. Step 3: Cross multiply
    658,104.72x = 987,196.08 × 208,817.28
  4. Step 4: Simplify right side
    658,104.72x = 206,143,600,252.26
  5. Step 5: Solve for x
    x = 206,143,600,252.26/658,104.72
  6. Step 6: Final answer
    x = 313,238.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.