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Finding the Fourth Proportional to 389,601.70, 584,402.55 and 223,252.90

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Solution

The fourth proportional to 389,601.70, 584,402.55 and 223,252.90 is: 334,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,601.70 : 584,402.55 = 223,252.90 : x
  2. Step 2: Convert to fraction form
    389,601.70/584,402.55 = 223,252.90/x
  3. Step 3: Cross multiply
    389,601.70x = 584,402.55 × 223,252.90
  4. Step 4: Simplify right side
    389,601.70x = 130,469,564,054.90
  5. Step 5: Solve for x
    x = 130,469,564,054.90/389,601.70
  6. Step 6: Final answer
    x = 334,879.35

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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.