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Finding the Fourth Proportional to 316,470.59, 436,728.56 and 171,276.63

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Solution

The fourth proportional to 316,470.59, 436,728.56 and 171,276.63 is: 236,361.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,470.59 : 436,728.56 = 171,276.63 : x
  2. Step 2: Convert to fraction form
    316,470.59/436,728.56 = 171,276.63/x
  3. Step 3: Cross multiply
    316,470.59x = 436,728.56 × 171,276.63
  4. Step 4: Simplify right side
    316,470.59x = 74,801,394,450.87
  5. Step 5: Solve for x
    x = 74,801,394,450.87/316,470.59
  6. Step 6: Final answer
    x = 236,361.28

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1.5x scale

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.