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Finding the Fourth Proportional to 248,405.76, 372,359.49 and 115,379.45

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Solution

The fourth proportional to 248,405.76, 372,359.49 and 115,379.45 is: 172,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,405.76 : 372,359.49 = 115,379.45 : x
  2. Step 2: Convert to fraction form
    248,405.76/372,359.49 = 115,379.45/x
  3. Step 3: Cross multiply
    248,405.76x = 372,359.49 × 115,379.45
  4. Step 4: Simplify right side
    248,405.76x = 42,962,631,296.68
  5. Step 5: Solve for x
    x = 42,962,631,296.68/248,405.76
  6. Step 6: Final answer
    x = 172,953.44

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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.