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Finding the Fourth Proportional to 545,221.44, 817,998.96 and 279,170.16

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Solution

The fourth proportional to 545,221.44, 817,998.96 and 279,170.16 is: 418,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,221.44 : 817,998.96 = 279,170.16 : x
  2. Step 2: Convert to fraction form
    545,221.44/817,998.96 = 279,170.16/x
  3. Step 3: Cross multiply
    545,221.44x = 817,998.96 × 279,170.16
  4. Step 4: Simplify right side
    545,221.44x = 228,360,900,543.03
  5. Step 5: Solve for x
    x = 228,360,900,543.03/545,221.44
  6. Step 6: Final answer
    x = 418,840.65

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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.