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Finding the Fourth Proportional to 418,996.70, 628,498.25 and 119,477.03

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Solution

The fourth proportional to 418,996.70, 628,498.25 and 119,477.03 is: 179,216.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,996.70 : 628,498.25 = 119,477.03 : x
  2. Step 2: Convert to fraction form
    418,996.70/628,498.25 = 119,477.03/x
  3. Step 3: Cross multiply
    418,996.70x = 628,498.25 × 119,477.03
  4. Step 4: Simplify right side
    418,996.70x = 75,091,102,887.19
  5. Step 5: Solve for x
    x = 75,091,102,887.19/418,996.70
  6. Step 6: Final answer
    x = 179,216.45

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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.