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Finding the Fourth Proportional to 316,101.22, 436,219.43 and 172,861.22

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Solution

The fourth proportional to 316,101.22, 436,219.43 and 172,861.22 is: 238,548.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,101.22 : 436,219.43 = 172,861.22 : x
  2. Step 2: Convert to fraction form
    316,101.22/436,219.43 = 172,861.22/x
  3. Step 3: Cross multiply
    316,101.22x = 436,219.43 × 172,861.22
  4. Step 4: Simplify right side
    316,101.22x = 75,405,423,083.75
  5. Step 5: Solve for x
    x = 75,405,423,083.75/316,101.22
  6. Step 6: Final answer
    x = 238,548.35

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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.