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Finding the Fourth Proportional to 658,432.36, 987,706.88 and 185,121.84

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Solution

The fourth proportional to 658,432.36, 987,706.88 and 185,121.84 is: 277,699.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,432.36 : 987,706.88 = 185,121.84 : x
  2. Step 2: Convert to fraction form
    658,432.36/987,706.88 = 185,121.84/x
  3. Step 3: Cross multiply
    658,432.36x = 987,706.88 × 185,121.84
  4. Step 4: Simplify right side
    658,432.36x = 182,846,115,006.26
  5. Step 5: Solve for x
    x = 182,846,115,006.26/658,432.36
  6. Step 6: Final answer
    x = 277,699.16

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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.