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Finding the Fourth Proportional to 317,701.89, 438,058.19 and 236,989.31

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Solution

The fourth proportional to 317,701.89, 438,058.19 and 236,989.31 is: 326,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,701.89 : 438,058.19 = 236,989.31 : x
  2. Step 2: Convert to fraction form
    317,701.89/438,058.19 = 236,989.31/x
  3. Step 3: Cross multiply
    317,701.89x = 438,058.19 × 236,989.31
  4. Step 4: Simplify right side
    317,701.89x = 103,815,104,812.71
  5. Step 5: Solve for x
    x = 103,815,104,812.71/317,701.89
  6. Step 6: Final answer
    x = 326,768.92

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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.