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Finding the Fourth Proportional to 418,993.17, 628,526.79 and 119,467.32

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Solution

The fourth proportional to 418,993.17, 628,526.79 and 119,467.32 is: 179,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,993.17 : 628,526.79 = 119,467.32 : x
  2. Step 2: Convert to fraction form
    418,993.17/628,526.79 = 119,467.32/x
  3. Step 3: Cross multiply
    418,993.17x = 628,526.79 × 119,467.32
  4. Step 4: Simplify right side
    418,993.17x = 75,088,411,149.50
  5. Step 5: Solve for x
    x = 75,088,411,149.50/418,993.17
  6. Step 6: Final answer
    x = 179,211.54

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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.