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Finding the Fourth Proportional to 299,318.40, 447,681.60 and 267,955.20

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Solution

The fourth proportional to 299,318.40, 447,681.60 and 267,955.20 is: 400,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,318.40 : 447,681.60 = 267,955.20 : x
  2. Step 2: Convert to fraction form
    299,318.40/447,681.60 = 267,955.20/x
  3. Step 3: Cross multiply
    299,318.40x = 447,681.60 × 267,955.20
  4. Step 4: Simplify right side
    299,318.40x = 119,958,612,664.32
  5. Step 5: Solve for x
    x = 119,958,612,664.32/299,318.40
  6. Step 6: Final answer
    x = 400,772.60

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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.