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Finding the Fourth Proportional to 299,689.60, 448,951.20 and 166,331.20

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Solution

The fourth proportional to 299,689.60, 448,951.20 and 166,331.20 is: 249,173.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,689.60 : 448,951.20 = 166,331.20 : x
  2. Step 2: Convert to fraction form
    299,689.60/448,951.20 = 166,331.20/x
  3. Step 3: Cross multiply
    299,689.60x = 448,951.20 × 166,331.20
  4. Step 4: Simplify right side
    299,689.60x = 74,674,591,837.44
  5. Step 5: Solve for x
    x = 74,674,591,837.44/299,689.60
  6. Step 6: Final answer
    x = 249,173.12

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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.