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Finding the Fourth Proportional to 389,593.61, 584,749.62 and 197,602.79

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Solution

The fourth proportional to 389,593.61, 584,749.62 and 197,602.79 is: 296,586.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,593.61 : 584,749.62 = 197,602.79 : x
  2. Step 2: Convert to fraction form
    389,593.61/584,749.62 = 197,602.79/x
  3. Step 3: Cross multiply
    389,593.61x = 584,749.62 × 197,602.79
  4. Step 4: Simplify right side
    389,593.61x = 115,548,153,439.69
  5. Step 5: Solve for x
    x = 115,548,153,439.69/389,593.61
  6. Step 6: Final answer
    x = 296,586.37

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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.