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Finding the Fourth Proportional to 243,240.83, 364,738.74 and 81,077.44

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Solution

The fourth proportional to 243,240.83, 364,738.74 and 81,077.44 is: 121,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,240.83 : 364,738.74 = 81,077.44 : x
  2. Step 2: Convert to fraction form
    243,240.83/364,738.74 = 81,077.44/x
  3. Step 3: Cross multiply
    243,240.83x = 364,738.74 × 81,077.44
  4. Step 4: Simplify right side
    243,240.83x = 29,572,081,484.33
  5. Step 5: Solve for x
    x = 29,572,081,484.33/243,240.83
  6. Step 6: Final answer
    x = 121,575.32

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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.