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Finding the Fourth Proportional to 316,467.31, 436,708.12 and 173,199.64

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Solution

The fourth proportional to 316,467.31, 436,708.12 and 173,199.64 is: 239,006.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,467.31 : 436,708.12 = 173,199.64 : x
  2. Step 2: Convert to fraction form
    316,467.31/436,708.12 = 173,199.64/x
  3. Step 3: Cross multiply
    316,467.31x = 436,708.12 × 173,199.64
  4. Step 4: Simplify right side
    316,467.31x = 75,637,689,169.08
  5. Step 5: Solve for x
    x = 75,637,689,169.08/316,467.31
  6. Step 6: Final answer
    x = 239,006.33

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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.