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Finding the Fourth Proportional to 316,570.66, 436,864.53 and 171,372.73

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Solution

The fourth proportional to 316,570.66, 436,864.53 and 171,372.73 is: 236,492.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,570.66 : 436,864.53 = 171,372.73 : x
  2. Step 2: Convert to fraction form
    316,570.66/436,864.53 = 171,372.73/x
  3. Step 3: Cross multiply
    316,570.66x = 436,864.53 × 171,372.73
  4. Step 4: Simplify right side
    316,570.66x = 74,866,667,146.27
  5. Step 5: Solve for x
    x = 74,866,667,146.27/316,570.66
  6. Step 6: Final answer
    x = 236,492.75

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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.