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Finding the Fourth Proportional to 545,197.53, 817,963.66 and 279,144.83

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Solution

The fourth proportional to 545,197.53, 817,963.66 and 279,144.83 is: 418,802.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,197.53 : 817,963.66 = 279,144.83 : x
  2. Step 2: Convert to fraction form
    545,197.53/817,963.66 = 279,144.83/x
  3. Step 3: Cross multiply
    545,197.53x = 817,963.66 × 279,144.83
  4. Step 4: Simplify right side
    545,197.53x = 228,330,322,727.06
  5. Step 5: Solve for x
    x = 228,330,322,727.06/545,197.53
  6. Step 6: Final answer
    x = 418,802.93

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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.