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Finding the Fourth Proportional to 243,327.30, 364,879.80 and 74,788.98

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Solution

The fourth proportional to 243,327.30, 364,879.80 and 74,788.98 is: 112,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,327.30 : 364,879.80 = 74,788.98 : x
  2. Step 2: Convert to fraction form
    243,327.30/364,879.80 = 74,788.98/x
  3. Step 3: Cross multiply
    243,327.30x = 364,879.80 × 74,788.98
  4. Step 4: Simplify right side
    243,327.30x = 27,288,988,064.60
  5. Step 5: Solve for x
    x = 27,288,988,064.60/243,327.30
  6. Step 6: Final answer
    x = 112,149.31

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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.