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Finding the Fourth Proportional to 319,244.80, 478,867.20 and 267,923.20

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Solution

The fourth proportional to 319,244.80, 478,867.20 and 267,923.20 is: 401,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,244.80 : 478,867.20 = 267,923.20 : x
  2. Step 2: Convert to fraction form
    319,244.80/478,867.20 = 267,923.20/x
  3. Step 3: Cross multiply
    319,244.80x = 478,867.20 × 267,923.20
  4. Step 4: Simplify right side
    319,244.80x = 128,299,632,599.04
  5. Step 5: Solve for x
    x = 128,299,632,599.04/319,244.80
  6. Step 6: Final answer
    x = 401,884.80

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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.