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Finding the Fourth Proportional to 299,278.92, 448,993.58 and 86,047.23

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Solution

The fourth proportional to 299,278.92, 448,993.58 and 86,047.23 is: 129,092.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,278.92 : 448,993.58 = 86,047.23 : x
  2. Step 2: Convert to fraction form
    299,278.92/448,993.58 = 86,047.23/x
  3. Step 3: Cross multiply
    299,278.92x = 448,993.58 × 86,047.23
  4. Step 4: Simplify right side
    299,278.92x = 38,634,653,846.78
  5. Step 5: Solve for x
    x = 38,634,653,846.78/299,278.92
  6. Step 6: Final answer
    x = 129,092.47

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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.