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Finding the Fourth Proportional to 613,390.20, 920,122.04 and 192,666.06

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Solution

The fourth proportional to 613,390.20, 920,122.04 and 192,666.06 is: 289,010.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,390.20 : 920,122.04 = 192,666.06 : x
  2. Step 2: Convert to fraction form
    613,390.20/920,122.04 = 192,666.06/x
  3. Step 3: Cross multiply
    613,390.20x = 920,122.04 × 192,666.06
  4. Step 4: Simplify right side
    613,390.20x = 177,276,288,165.96
  5. Step 5: Solve for x
    x = 177,276,288,165.96/613,390.20
  6. Step 6: Final answer
    x = 289,010.63

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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.