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Finding the Fourth Proportional to 505,167.60, 757,856.70 and 168,312.90

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Solution

The fourth proportional to 505,167.60, 757,856.70 and 168,312.90 is: 252,504.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,167.60 : 757,856.70 = 168,312.90 : x
  2. Step 2: Convert to fraction form
    505,167.60/757,856.70 = 168,312.90/x
  3. Step 3: Cross multiply
    505,167.60x = 757,856.70 × 168,312.90
  4. Step 4: Simplify right side
    505,167.60x = 127,557,058,961.43
  5. Step 5: Solve for x
    x = 127,557,058,961.43/505,167.60
  6. Step 6: Final answer
    x = 252,504.43

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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.