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Finding the Fourth Proportional to 561,659.60, 842,489.40 and 162,313.40

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Solution

The fourth proportional to 561,659.60, 842,489.40 and 162,313.40 is: 243,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,659.60 : 842,489.40 = 162,313.40 : x
  2. Step 2: Convert to fraction form
    561,659.60/842,489.40 = 162,313.40/x
  3. Step 3: Cross multiply
    561,659.60x = 842,489.40 × 162,313.40
  4. Step 4: Simplify right side
    561,659.60x = 136,747,318,977.96
  5. Step 5: Solve for x
    x = 136,747,318,977.96/561,659.60
  6. Step 6: Final answer
    x = 243,470.10

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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.