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Finding the Fourth Proportional to 658,199.61, 987,186.51 and 208,820.31

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Solution

The fourth proportional to 658,199.61, 987,186.51 and 208,820.31 is: 313,194.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,199.61 : 987,186.51 = 208,820.31 : x
  2. Step 2: Convert to fraction form
    658,199.61/987,186.51 = 208,820.31/x
  3. Step 3: Cross multiply
    658,199.61x = 987,186.51 × 208,820.31
  4. Step 4: Simplify right side
    658,199.61x = 206,144,593,046.02
  5. Step 5: Solve for x
    x = 206,144,593,046.02/658,199.61
  6. Step 6: Final answer
    x = 313,194.64

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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.