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Finding the Fourth Proportional to 316,446.35, 436,700.03 and 173,203.31

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Solution

The fourth proportional to 316,446.35, 436,700.03 and 173,203.31 is: 239,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,446.35 : 436,700.03 = 173,203.31 : x
  2. Step 2: Convert to fraction form
    316,446.35/436,700.03 = 173,203.31/x
  3. Step 3: Cross multiply
    316,446.35x = 436,700.03 × 173,203.31
  4. Step 4: Simplify right side
    316,446.35x = 75,637,890,898.83
  5. Step 5: Solve for x
    x = 75,637,890,898.83/316,446.35
  6. Step 6: Final answer
    x = 239,022.80

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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.