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Finding the Fourth Proportional to 316,377.64, 436,601.16 and 173,137.72

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Solution

The fourth proportional to 316,377.64, 436,601.16 and 173,137.72 is: 238,930.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,377.64 : 436,601.16 = 173,137.72 : x
  2. Step 2: Convert to fraction form
    316,377.64/436,601.16 = 173,137.72/x
  3. Step 3: Cross multiply
    316,377.64x = 436,601.16 × 173,137.72
  4. Step 4: Simplify right side
    316,377.64x = 75,592,129,391.76
  5. Step 5: Solve for x
    x = 75,592,129,391.76/316,377.64
  6. Step 6: Final answer
    x = 238,930.06

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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.