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Finding the Fourth Proportional to 389,129.60, 583,370.40 and 164,662.40

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Solution

The fourth proportional to 389,129.60, 583,370.40 and 164,662.40 is: 246,856.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,129.60 : 583,370.40 = 164,662.40 : x
  2. Step 2: Convert to fraction form
    389,129.60/583,370.40 = 164,662.40/x
  3. Step 3: Cross multiply
    389,129.60x = 583,370.40 × 164,662.40
  4. Step 4: Simplify right side
    389,129.60x = 96,059,170,152.96
  5. Step 5: Solve for x
    x = 96,059,170,152.96/389,129.60
  6. Step 6: Final answer
    x = 246,856.50

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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.