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Finding the Fourth Proportional to 399,238.64, 551,060.52 and 229,527.44

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Solution

The fourth proportional to 399,238.64, 551,060.52 and 229,527.44 is: 316,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,238.64 : 551,060.52 = 229,527.44 : x
  2. Step 2: Convert to fraction form
    399,238.64/551,060.52 = 229,527.44/x
  3. Step 3: Cross multiply
    399,238.64x = 551,060.52 × 229,527.44
  4. Step 4: Simplify right side
    399,238.64x = 126,483,510,440.67
  5. Step 5: Solve for x
    x = 126,483,510,440.67/399,238.64
  6. Step 6: Final answer
    x = 316,811.80

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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.