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Finding the Fourth Proportional to 478,832.66, 660,772.06 and 261,036.83

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Solution

The fourth proportional to 478,832.66, 660,772.06 and 261,036.83 is: 360,221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,832.66 : 660,772.06 = 261,036.83 : x
  2. Step 2: Convert to fraction form
    478,832.66/660,772.06 = 261,036.83/x
  3. Step 3: Cross multiply
    478,832.66x = 660,772.06 × 261,036.83
  4. Step 4: Simplify right side
    478,832.66x = 172,485,839,938.52
  5. Step 5: Solve for x
    x = 172,485,839,938.52/478,832.66
  6. Step 6: Final answer
    x = 360,221.54

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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.