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Finding the Fourth Proportional to 316,450.74, 436,702.56 and 173,219.88

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Solution

The fourth proportional to 316,450.74, 436,702.56 and 173,219.88 is: 239,043.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,450.74 : 436,702.56 = 173,219.88 : x
  2. Step 2: Convert to fraction form
    316,450.74/436,702.56 = 173,219.88/x
  3. Step 3: Cross multiply
    316,450.74x = 436,702.56 × 173,219.88
  4. Step 4: Simplify right side
    316,450.74x = 75,645,565,038.89
  5. Step 5: Solve for x
    x = 75,645,565,038.89/316,450.74
  6. Step 6: Final answer
    x = 239,043.73

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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.