Home / 658,255.78-987,383.70-159,619.78

Finding the Fourth Proportional to 658,255.78, 987,383.70 and 159,619.78

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Solution

The fourth proportional to 658,255.78, 987,383.70 and 159,619.78 is: 239,429.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,255.78 : 987,383.70 = 159,619.78 : x
  2. Step 2: Convert to fraction form
    658,255.78/987,383.70 = 159,619.78/x
  3. Step 3: Cross multiply
    658,255.78x = 987,383.70 × 159,619.78
  4. Step 4: Simplify right side
    658,255.78x = 157,605,968,969.59
  5. Step 5: Solve for x
    x = 157,605,968,969.59/658,255.78
  6. Step 6: Final answer
    x = 239,429.68

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Double scale
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Similar ratio
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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.