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Finding the Fourth Proportional to 612,112.70, 918,238.90 and 162,851.86

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Solution

The fourth proportional to 612,112.70, 918,238.90 and 162,851.86 is: 244,296.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,112.70 : 918,238.90 = 162,851.86 : x
  2. Step 2: Convert to fraction form
    612,112.70/918,238.90 = 162,851.86/x
  3. Step 3: Cross multiply
    612,112.70x = 918,238.90 × 162,851.86
  4. Step 4: Simplify right side
    612,112.70x = 149,536,912,789.35
  5. Step 5: Solve for x
    x = 149,536,912,789.35/612,112.70
  6. Step 6: Final answer
    x = 244,296.37

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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.