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Finding the Fourth Proportional to 299,998.40, 450,122.66 and 131,639.73

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Solution

The fourth proportional to 299,998.40, 450,122.66 and 131,639.73 is: 197,514.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,998.40 : 450,122.66 = 131,639.73 : x
  2. Step 2: Convert to fraction form
    299,998.40/450,122.66 = 131,639.73/x
  3. Step 3: Cross multiply
    299,998.40x = 450,122.66 × 131,639.73
  4. Step 4: Simplify right side
    299,998.40x = 59,254,025,429.28
  5. Step 5: Solve for x
    x = 59,254,025,429.28/299,998.40
  6. Step 6: Final answer
    x = 197,514.47

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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.