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Finding the Fourth Proportional to 393,440.94, 542,994.57 and 223,700.58

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Solution

The fourth proportional to 393,440.94, 542,994.57 and 223,700.58 is: 308,733.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,440.94 : 542,994.57 = 223,700.58 : x
  2. Step 2: Convert to fraction form
    393,440.94/542,994.57 = 223,700.58/x
  3. Step 3: Cross multiply
    393,440.94x = 542,994.57 × 223,700.58
  4. Step 4: Simplify right side
    393,440.94x = 121,468,200,245.85
  5. Step 5: Solve for x
    x = 121,468,200,245.85/393,440.94
  6. Step 6: Final answer
    x = 308,733.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.