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Finding the Fourth Proportional to 320,737.88, 480,774.64 and 263,981.64

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Solution

The fourth proportional to 320,737.88, 480,774.64 and 263,981.64 is: 395,699.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,737.88 : 480,774.64 = 263,981.64 : x
  2. Step 2: Convert to fraction form
    320,737.88/480,774.64 = 263,981.64/x
  3. Step 3: Cross multiply
    320,737.88x = 480,774.64 × 263,981.64
  4. Step 4: Simplify right side
    320,737.88x = 126,915,677,937.61
  5. Step 5: Solve for x
    x = 126,915,677,937.61/320,737.88
  6. Step 6: Final answer
    x = 395,699.06

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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.