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Finding the Fourth Proportional to 478,937.08, 661,028.94 and 275,127.80

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Solution

The fourth proportional to 478,937.08, 661,028.94 and 275,127.80 is: 379,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,937.08 : 661,028.94 = 275,127.80 : x
  2. Step 2: Convert to fraction form
    478,937.08/661,028.94 = 275,127.80/x
  3. Step 3: Cross multiply
    478,937.08x = 661,028.94 × 275,127.80
  4. Step 4: Simplify right side
    478,937.08x = 181,867,437,998.53
  5. Step 5: Solve for x
    x = 181,867,437,998.53/478,937.08
  6. Step 6: Final answer
    x = 379,731.38

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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.