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Finding the Fourth Proportional to 658,451.49, 987,670.04 and 159,815.49

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Solution

The fourth proportional to 658,451.49, 987,670.04 and 159,815.49 is: 239,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,451.49 : 987,670.04 = 159,815.49 : x
  2. Step 2: Convert to fraction form
    658,451.49/987,670.04 = 159,815.49/x
  3. Step 3: Cross multiply
    658,451.49x = 987,670.04 × 159,815.49
  4. Step 4: Simplify right side
    658,451.49x = 157,844,970,601.84
  5. Step 5: Solve for x
    x = 157,844,970,601.84/658,451.49
  6. Step 6: Final answer
    x = 239,721.49

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Double scale
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1.5x scale

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.