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Finding the Fourth Proportional to 252,978.32, 349,080.36 and 139,794.32

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Solution

The fourth proportional to 252,978.32, 349,080.36 and 139,794.32 is: 192,899.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,978.32 : 349,080.36 = 139,794.32 : x
  2. Step 2: Convert to fraction form
    252,978.32/349,080.36 = 139,794.32/x
  3. Step 3: Cross multiply
    252,978.32x = 349,080.36 × 139,794.32
  4. Step 4: Simplify right side
    252,978.32x = 48,799,451,551.56
  5. Step 5: Solve for x
    x = 48,799,451,551.56/252,978.32
  6. Step 6: Final answer
    x = 192,899.74

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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.