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Finding the Fourth Proportional to 479,216.01, 661,295.82 and 275,123.30

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Solution

The fourth proportional to 479,216.01, 661,295.82 and 275,123.30 is: 379,657.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,216.01 : 661,295.82 = 275,123.30 : x
  2. Step 2: Convert to fraction form
    479,216.01/661,295.82 = 275,123.30/x
  3. Step 3: Cross multiply
    479,216.01x = 661,295.82 × 275,123.30
  4. Step 4: Simplify right side
    479,216.01x = 181,937,885,999.84
  5. Step 5: Solve for x
    x = 181,937,885,999.84/479,216.01
  6. Step 6: Final answer
    x = 379,657.36

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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.