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Finding the Fourth Proportional to 301,086.20, 451,110.90 and 142,974.20

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Solution

The fourth proportional to 301,086.20, 451,110.90 and 142,974.20 is: 214,215.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,086.20 : 451,110.90 = 142,974.20 : x
  2. Step 2: Convert to fraction form
    301,086.20/451,110.90 = 142,974.20/x
  3. Step 3: Cross multiply
    301,086.20x = 451,110.90 × 142,974.20
  4. Step 4: Simplify right side
    301,086.20x = 64,497,220,038.78
  5. Step 5: Solve for x
    x = 64,497,220,038.78/301,086.20
  6. Step 6: Final answer
    x = 214,215.13

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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.