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Finding the Fourth Proportional to 399,259.89, 550,859.27 and 255,770.01

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Solution

The fourth proportional to 399,259.89, 550,859.27 and 255,770.01 is: 352,886.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,259.89 : 550,859.27 = 255,770.01 : x
  2. Step 2: Convert to fraction form
    399,259.89/550,859.27 = 255,770.01/x
  3. Step 3: Cross multiply
    399,259.89x = 550,859.27 × 255,770.01
  4. Step 4: Simplify right side
    399,259.89x = 140,893,279,717.64
  5. Step 5: Solve for x
    x = 140,893,279,717.64/399,259.89
  6. Step 6: Final answer
    x = 352,886.14

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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.