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Finding the Fourth Proportional to 317,656.58, 438,366.73 and 172,462.52

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Solution

The fourth proportional to 317,656.58, 438,366.73 and 172,462.52 is: 237,998.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,656.58 : 438,366.73 = 172,462.52 : x
  2. Step 2: Convert to fraction form
    317,656.58/438,366.73 = 172,462.52/x
  3. Step 3: Cross multiply
    317,656.58x = 438,366.73 × 172,462.52
  4. Step 4: Simplify right side
    317,656.58x = 75,601,831,604.72
  5. Step 5: Solve for x
    x = 75,601,831,604.72/317,656.58
  6. Step 6: Final answer
    x = 237,998.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.