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Finding the Fourth Proportional to 299,465.12, 449,262.28 and 86,231.60

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Solution

The fourth proportional to 299,465.12, 449,262.28 and 86,231.60 is: 129,366.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,465.12 : 449,262.28 = 86,231.60 : x
  2. Step 2: Convert to fraction form
    299,465.12/449,262.28 = 86,231.60/x
  3. Step 3: Cross multiply
    299,465.12x = 449,262.28 × 86,231.60
  4. Step 4: Simplify right side
    299,465.12x = 38,740,605,224.05
  5. Step 5: Solve for x
    x = 38,740,605,224.05/299,465.12
  6. Step 6: Final answer
    x = 129,366.00

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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.