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Finding the Fourth Proportional to 395,891.80, 593,837.70 and 115,437.40

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Solution

The fourth proportional to 395,891.80, 593,837.70 and 115,437.40 is: 173,156.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,891.80 : 593,837.70 = 115,437.40 : x
  2. Step 2: Convert to fraction form
    395,891.80/593,837.70 = 115,437.40/x
  3. Step 3: Cross multiply
    395,891.80x = 593,837.70 × 115,437.40
  4. Step 4: Simplify right side
    395,891.80x = 68,551,080,109.98
  5. Step 5: Solve for x
    x = 68,551,080,109.98/395,891.80
  6. Step 6: Final answer
    x = 173,156.10

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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.