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Finding the Fourth Proportional to 316,427.72, 436,671.40 and 171,233.49

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Solution

The fourth proportional to 316,427.72, 436,671.40 and 171,233.49 is: 236,302.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,427.72 : 436,671.40 = 171,233.49 : x
  2. Step 2: Convert to fraction form
    316,427.72/436,671.40 = 171,233.49/x
  3. Step 3: Cross multiply
    316,427.72x = 436,671.40 × 171,233.49
  4. Step 4: Simplify right side
    316,427.72x = 74,772,764,765.66
  5. Step 5: Solve for x
    x = 74,772,764,765.66/316,427.72
  6. Step 6: Final answer
    x = 236,302.83

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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.