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Finding the Fourth Proportional to 299,792.80, 449,631.60 and 89,437.60

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Solution

The fourth proportional to 299,792.80, 449,631.60 and 89,437.60 is: 134,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,792.80 : 449,631.60 = 89,437.60 : x
  2. Step 2: Convert to fraction form
    299,792.80/449,631.60 = 89,437.60/x
  3. Step 3: Cross multiply
    299,792.80x = 449,631.60 × 89,437.60
  4. Step 4: Simplify right side
    299,792.80x = 40,213,971,188.16
  5. Step 5: Solve for x
    x = 40,213,971,188.16/299,792.80
  6. Step 6: Final answer
    x = 134,139.22

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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.