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Finding the Fourth Proportional to 545,188.01, 817,949.43 and 279,135.32

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Solution

The fourth proportional to 545,188.01, 817,949.43 and 279,135.32 is: 418,788.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,188.01 : 817,949.43 = 279,135.32 : x
  2. Step 2: Convert to fraction form
    545,188.01/817,949.43 = 279,135.32/x
  3. Step 3: Cross multiply
    545,188.01x = 817,949.43 × 279,135.32
  4. Step 4: Simplify right side
    545,188.01x = 228,318,571,797.12
  5. Step 5: Solve for x
    x = 228,318,571,797.12/545,188.01
  6. Step 6: Final answer
    x = 418,788.69

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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.