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Finding the Fourth Proportional to 399,552.35, 551,393.04 and 238,500.82

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Solution

The fourth proportional to 399,552.35, 551,393.04 and 238,500.82 is: 329,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,552.35 : 551,393.04 = 238,500.82 : x
  2. Step 2: Convert to fraction form
    399,552.35/551,393.04 = 238,500.82/x
  3. Step 3: Cross multiply
    399,552.35x = 551,393.04 × 238,500.82
  4. Step 4: Simplify right side
    399,552.35x = 131,507,688,232.82
  5. Step 5: Solve for x
    x = 131,507,688,232.82/399,552.35
  6. Step 6: Final answer
    x = 329,137.57

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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.