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Finding the Fourth Proportional to 348,361.20, 521,764.20 and 268,851.60

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Solution

The fourth proportional to 348,361.20, 521,764.20 and 268,851.60 is: 402,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,361.20 : 521,764.20 = 268,851.60 : x
  2. Step 2: Convert to fraction form
    348,361.20/521,764.20 = 268,851.60/x
  3. Step 3: Cross multiply
    348,361.20x = 521,764.20 × 268,851.60
  4. Step 4: Simplify right side
    348,361.20x = 140,277,139,992.72
  5. Step 5: Solve for x
    x = 140,277,139,992.72/348,361.20
  6. Step 6: Final answer
    x = 402,677.28

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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.