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Finding the Fourth Proportional to 299,948.40, 449,987.40 and 89,607.60

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Solution

The fourth proportional to 299,948.40, 449,987.40 and 89,607.60 is: 134,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,948.40 : 449,987.40 = 89,607.60 : x
  2. Step 2: Convert to fraction form
    299,948.40/449,987.40 = 89,607.60/x
  3. Step 3: Cross multiply
    299,948.40x = 449,987.40 × 89,607.60
  4. Step 4: Simplify right side
    299,948.40x = 40,322,290,944.24
  5. Step 5: Solve for x
    x = 40,322,290,944.24/299,948.40
  6. Step 6: Final answer
    x = 134,430.76

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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.