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Finding the Fourth Proportional to 389,622.60, 584,433.90 and 123,464.70

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Solution

The fourth proportional to 389,622.60, 584,433.90 and 123,464.70 is: 185,197.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,622.60 : 584,433.90 = 123,464.70 : x
  2. Step 2: Convert to fraction form
    389,622.60/584,433.90 = 123,464.70/x
  3. Step 3: Cross multiply
    389,622.60x = 584,433.90 × 123,464.70
  4. Step 4: Simplify right side
    389,622.60x = 72,156,956,133.33
  5. Step 5: Solve for x
    x = 72,156,956,133.33/389,622.60
  6. Step 6: Final answer
    x = 185,197.05

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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.