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Finding the Fourth Proportional to 380,861.52, 525,315.96 and 251,650.32

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Solution

The fourth proportional to 380,861.52, 525,315.96 and 251,650.32 is: 347,097.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,861.52 : 525,315.96 = 251,650.32 : x
  2. Step 2: Convert to fraction form
    380,861.52/525,315.96 = 251,650.32/x
  3. Step 3: Cross multiply
    380,861.52x = 525,315.96 × 251,650.32
  4. Step 4: Simplify right side
    380,861.52x = 132,195,929,435.11
  5. Step 5: Solve for x
    x = 132,195,929,435.11/380,861.52
  6. Step 6: Final answer
    x = 347,097.10

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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.