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Finding the Fourth Proportional to 418,228.71, 626,990.37 and 181,393.01

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Solution

The fourth proportional to 418,228.71, 626,990.37 and 181,393.01 is: 271,936.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,228.71 : 626,990.37 = 181,393.01 : x
  2. Step 2: Convert to fraction form
    418,228.71/626,990.37 = 181,393.01/x
  3. Step 3: Cross multiply
    418,228.71x = 626,990.37 × 181,393.01
  4. Step 4: Simplify right side
    418,228.71x = 113,731,670,455.31
  5. Step 5: Solve for x
    x = 113,731,670,455.31/418,228.71
  6. Step 6: Final answer
    x = 271,936.55

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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.