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Finding the Fourth Proportional to 316,446.54, 436,696.76 and 173,215.66

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Solution

The fourth proportional to 316,446.54, 436,696.76 and 173,215.66 is: 239,037.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,446.54 : 436,696.76 = 173,215.66 : x
  2. Step 2: Convert to fraction form
    316,446.54/436,696.76 = 173,215.66/x
  3. Step 3: Cross multiply
    316,446.54x = 436,696.76 × 173,215.66
  4. Step 4: Simplify right side
    316,446.54x = 75,642,717,503.26
  5. Step 5: Solve for x
    x = 75,642,717,503.26/316,446.54
  6. Step 6: Final answer
    x = 239,037.90

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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.