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Finding the Fourth Proportional to 316,431.60, 436,672.27 and 171,234.20

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Solution

The fourth proportional to 316,431.60, 436,672.27 and 171,234.20 is: 236,301.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,431.60 : 436,672.27 = 171,234.20 : x
  2. Step 2: Convert to fraction form
    316,431.60/436,672.27 = 171,234.20/x
  3. Step 3: Cross multiply
    316,431.60x = 436,672.27 × 171,234.20
  4. Step 4: Simplify right side
    316,431.60x = 74,773,226,815.63
  5. Step 5: Solve for x
    x = 74,773,226,815.63/316,431.60
  6. Step 6: Final answer
    x = 236,301.39

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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.