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Finding the Fourth Proportional to 210,645.20, 315,311.70 and 151,596.20

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Solution

The fourth proportional to 210,645.20, 315,311.70 and 151,596.20 is: 226,922.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,645.20 : 315,311.70 = 151,596.20 : x
  2. Step 2: Convert to fraction form
    210,645.20/315,311.70 = 151,596.20/x
  3. Step 3: Cross multiply
    210,645.20x = 315,311.70 × 151,596.20
  4. Step 4: Simplify right side
    210,645.20x = 47,800,055,535.54
  5. Step 5: Solve for x
    x = 47,800,055,535.54/210,645.20
  6. Step 6: Final answer
    x = 226,922.12

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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.