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Finding the Fourth Proportional to 658,143.48, 987,215.22 and 159,507.48

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Solution

The fourth proportional to 658,143.48, 987,215.22 and 159,507.48 is: 239,261.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,143.48 : 987,215.22 = 159,507.48 : x
  2. Step 2: Convert to fraction form
    658,143.48/987,215.22 = 159,507.48/x
  3. Step 3: Cross multiply
    658,143.48x = 987,215.22 × 159,507.48
  4. Step 4: Simplify right side
    658,143.48x = 157,468,211,959.85
  5. Step 5: Solve for x
    x = 157,468,211,959.85/658,143.48
  6. Step 6: Final answer
    x = 239,261.22

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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.