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Finding the Fourth Proportional to 368,496.60, 551,432.70 and 255,647.40

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Solution

The fourth proportional to 368,496.60, 551,432.70 and 255,647.40 is: 382,560.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,496.60 : 551,432.70 = 255,647.40 : x
  2. Step 2: Convert to fraction form
    368,496.60/551,432.70 = 255,647.40/x
  3. Step 3: Cross multiply
    368,496.60x = 551,432.70 × 255,647.40
  4. Step 4: Simplify right side
    368,496.60x = 140,972,336,029.98
  5. Step 5: Solve for x
    x = 140,972,336,029.98/368,496.60
  6. Step 6: Final answer
    x = 382,560.75

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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.