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Finding the Fourth Proportional to 399,366.40, 551,247.68 and 246,451.36

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Solution

The fourth proportional to 399,366.40, 551,247.68 and 246,451.36 is: 340,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,366.40 : 551,247.68 = 246,451.36 : x
  2. Step 2: Convert to fraction form
    399,366.40/551,247.68 = 246,451.36/x
  3. Step 3: Cross multiply
    399,366.40x = 551,247.68 × 246,451.36
  4. Step 4: Simplify right side
    399,366.40x = 135,855,740,432.85
  5. Step 5: Solve for x
    x = 135,855,740,432.85/399,366.40
  6. Step 6: Final answer
    x = 340,178.19

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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.