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Finding the Fourth Proportional to 389,442.70, 584,164.05 and 179,490.70

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Solution

The fourth proportional to 389,442.70, 584,164.05 and 179,490.70 is: 269,236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,442.70 : 584,164.05 = 179,490.70 : x
  2. Step 2: Convert to fraction form
    389,442.70/584,164.05 = 179,490.70/x
  3. Step 3: Cross multiply
    389,442.70x = 584,164.05 × 179,490.70
  4. Step 4: Simplify right side
    389,442.70x = 104,852,014,249.34
  5. Step 5: Solve for x
    x = 104,852,014,249.34/389,442.70
  6. Step 6: Final answer
    x = 269,236.05

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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.