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Finding the Fourth Proportional to 316,103.49, 436,222.80 and 172,863.63

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Solution

The fourth proportional to 316,103.49, 436,222.80 and 172,863.63 is: 238,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,103.49 : 436,222.80 = 172,863.63 : x
  2. Step 2: Convert to fraction form
    316,103.49/436,222.80 = 172,863.63/x
  3. Step 3: Cross multiply
    316,103.49x = 436,222.80 × 172,863.63
  4. Step 4: Simplify right side
    316,103.49x = 75,407,056,696.76
  5. Step 5: Solve for x
    x = 75,407,056,696.76/316,103.49
  6. Step 6: Final answer
    x = 238,551.80

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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.