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Finding the Fourth Proportional to 613,618.40, 920,051.76 and 239,204

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Solution

The fourth proportional to 613,618.40, 920,051.76 and 239,204 is: 358,659.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,618.40 : 920,051.76 = 239,204 : x
  2. Step 2: Convert to fraction form
    613,618.40/920,051.76 = 239,204/x
  3. Step 3: Cross multiply
    613,618.40x = 920,051.76 × 239,204
  4. Step 4: Simplify right side
    613,618.40x = 220,080,061,199.04
  5. Step 5: Solve for x
    x = 220,080,061,199.04/613,618.40
  6. Step 6: Final answer
    x = 358,659.49

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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.