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Finding the Fourth Proportional to 299,116.40, 448,674.60 and 279,287.60

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Solution

The fourth proportional to 299,116.40, 448,674.60 and 279,287.60 is: 418,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,116.40 : 448,674.60 = 279,287.60 : x
  2. Step 2: Convert to fraction form
    299,116.40/448,674.60 = 279,287.60/x
  3. Step 3: Cross multiply
    299,116.40x = 448,674.60 × 279,287.60
  4. Step 4: Simplify right side
    299,116.40x = 125,309,252,214.96
  5. Step 5: Solve for x
    x = 125,309,252,214.96/299,116.40
  6. Step 6: Final answer
    x = 418,931.40

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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.