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Finding the Fourth Proportional to 479,145.68, 661,219.80 and 275,210

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Solution

The fourth proportional to 479,145.68, 661,219.80 and 275,210 is: 379,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,145.68 : 661,219.80 = 275,210 : x
  2. Step 2: Convert to fraction form
    479,145.68/661,219.80 = 275,210/x
  3. Step 3: Cross multiply
    479,145.68x = 661,219.80 × 275,210
  4. Step 4: Simplify right side
    479,145.68x = 181,974,301,158
  5. Step 5: Solve for x
    x = 181,974,301,158/479,145.68
  6. Step 6: Final answer
    x = 379,789.09

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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.