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Finding the Fourth Proportional to 613,108.63, 919,818.51 and 192,388.15

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Solution

The fourth proportional to 613,108.63, 919,818.51 and 192,388.15 is: 288,631.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,108.63 : 919,818.51 = 192,388.15 : x
  2. Step 2: Convert to fraction form
    613,108.63/919,818.51 = 192,388.15/x
  3. Step 3: Cross multiply
    613,108.63x = 919,818.51 × 192,388.15
  4. Step 4: Simplify right side
    613,108.63x = 176,962,181,474.66
  5. Step 5: Solve for x
    x = 176,962,181,474.66/613,108.63
  6. Step 6: Final answer
    x = 288,631.04

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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.