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Finding the Fourth Proportional to 480,906.40, 663,531.60 and 310,936

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Solution

The fourth proportional to 480,906.40, 663,531.60 and 310,936 is: 429,014.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,906.40 : 663,531.60 = 310,936 : x
  2. Step 2: Convert to fraction form
    480,906.40/663,531.60 = 310,936/x
  3. Step 3: Cross multiply
    480,906.40x = 663,531.60 × 310,936
  4. Step 4: Simplify right side
    480,906.40x = 206,315,861,577.60
  5. Step 5: Solve for x
    x = 206,315,861,577.60/480,906.40
  6. Step 6: Final answer
    x = 429,014.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.