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Finding the Fourth Proportional to 389,472, 584,208 and 93,984

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Solution

The fourth proportional to 389,472, 584,208 and 93,984 is: 140,976

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,472 : 584,208 = 93,984 : x
  2. Step 2: Convert to fraction form
    389,472/584,208 = 93,984/x
  3. Step 3: Cross multiply
    389,472x = 584,208 × 93,984
  4. Step 4: Simplify right side
    389,472x = 54,906,204,672
  5. Step 5: Solve for x
    x = 54,906,204,672/389,472
  6. Step 6: Final answer
    x = 140,976

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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.