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Finding the Fourth Proportional to 389,375.60, 583,739.40 and 164,908.40

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Solution

The fourth proportional to 389,375.60, 583,739.40 and 164,908.40 is: 247,225.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,375.60 : 583,739.40 = 164,908.40 : x
  2. Step 2: Convert to fraction form
    389,375.60/583,739.40 = 164,908.40/x
  3. Step 3: Cross multiply
    389,375.60x = 583,739.40 × 164,908.40
  4. Step 4: Simplify right side
    389,375.60x = 96,263,530,470.96
  5. Step 5: Solve for x
    x = 96,263,530,470.96/389,375.60
  6. Step 6: Final answer
    x = 247,225.38

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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.