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Finding the Fourth Proportional to 368,331.30, 551,978.55 and 272,816.10

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Solution

The fourth proportional to 368,331.30, 551,978.55 and 272,816.10 is: 408,840.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,331.30 : 551,978.55 = 272,816.10 : x
  2. Step 2: Convert to fraction form
    368,331.30/551,978.55 = 272,816.10/x
  3. Step 3: Cross multiply
    368,331.30x = 551,978.55 × 272,816.10
  4. Step 4: Simplify right side
    368,331.30x = 150,588,635,294.66
  5. Step 5: Solve for x
    x = 150,588,635,294.66/368,331.30
  6. Step 6: Final answer
    x = 408,840.18

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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.