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Finding the Fourth Proportional to 325,118.88, 448,416 and 279,871.20

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Solution

The fourth proportional to 325,118.88, 448,416 and 279,871.20 is: 386,008.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,118.88 : 448,416 = 279,871.20 : x
  2. Step 2: Convert to fraction form
    325,118.88/448,416 = 279,871.20/x
  3. Step 3: Cross multiply
    325,118.88x = 448,416 × 279,871.20
  4. Step 4: Simplify right side
    325,118.88x = 125,498,724,019.20
  5. Step 5: Solve for x
    x = 125,498,724,019.20/325,118.88
  6. Step 6: Final answer
    x = 386,008.72

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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.