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Finding the Fourth Proportional to 389,597.61, 584,755.62 and 197,606.79

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Solution

The fourth proportional to 389,597.61, 584,755.62 and 197,606.79 is: 296,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,597.61 : 584,755.62 = 197,606.79 : x
  2. Step 2: Convert to fraction form
    389,597.61/584,755.62 = 197,606.79/x
  3. Step 3: Cross multiply
    389,597.61x = 584,755.62 × 197,606.79
  4. Step 4: Simplify right side
    389,597.61x = 115,551,681,002.66
  5. Step 5: Solve for x
    x = 115,551,681,002.66/389,597.61
  6. Step 6: Final answer
    x = 296,592.38

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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.