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Finding the Fourth Proportional to 505,044.70, 757,749.30 and 312,695.32

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Solution

The fourth proportional to 505,044.70, 757,749.30 and 312,695.32 is: 469,155.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,044.70 : 757,749.30 = 312,695.32 : x
  2. Step 2: Convert to fraction form
    505,044.70/757,749.30 = 312,695.32/x
  3. Step 3: Cross multiply
    505,044.70x = 757,749.30 × 312,695.32
  4. Step 4: Simplify right side
    505,044.70x = 236,944,659,843.28
  5. Step 5: Solve for x
    x = 236,944,659,843.28/505,044.70
  6. Step 6: Final answer
    x = 469,155.82

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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.