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Finding the Fourth Proportional to 389,815.20, 584,269.20 and 179,474.40

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Solution

The fourth proportional to 389,815.20, 584,269.20 and 179,474.40 is: 269,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,815.20 : 584,269.20 = 179,474.40 : x
  2. Step 2: Convert to fraction form
    389,815.20/584,269.20 = 179,474.40/x
  3. Step 3: Cross multiply
    389,815.20x = 584,269.20 × 179,474.40
  4. Step 4: Simplify right side
    389,815.20x = 104,861,364,108.48
  5. Step 5: Solve for x
    x = 104,861,364,108.48/389,815.20
  6. Step 6: Final answer
    x = 269,002.76

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1.5x scale

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.