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Finding the Fourth Proportional to 316,174.59, 436,324.32 and 172,931.56

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Solution

The fourth proportional to 316,174.59, 436,324.32 and 172,931.56 is: 238,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,174.59 : 436,324.32 = 172,931.56 : x
  2. Step 2: Convert to fraction form
    316,174.59/436,324.32 = 172,931.56/x
  3. Step 3: Cross multiply
    316,174.59x = 436,324.32 × 172,931.56
  4. Step 4: Simplify right side
    316,174.59x = 75,454,244,232.73
  5. Step 5: Solve for x
    x = 75,454,244,232.73/316,174.59
  6. Step 6: Final answer
    x = 238,647.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.