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Finding the Fourth Proportional to 243,097.86, 364,809.87 and 85,326.78

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Solution

The fourth proportional to 243,097.86, 364,809.87 and 85,326.78 is: 128,047.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,097.86 : 364,809.87 = 85,326.78 : x
  2. Step 2: Convert to fraction form
    243,097.86/364,809.87 = 85,326.78/x
  3. Step 3: Cross multiply
    243,097.86x = 364,809.87 × 85,326.78
  4. Step 4: Simplify right side
    243,097.86x = 31,128,051,519.32
  5. Step 5: Solve for x
    x = 31,128,051,519.32/243,097.86
  6. Step 6: Final answer
    x = 128,047.41

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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.