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Finding the Fourth Proportional to 316,358.90, 436,575.26 and 173,118.96

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Solution

The fourth proportional to 316,358.90, 436,575.26 and 173,118.96 is: 238,904.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,358.90 : 436,575.26 = 173,118.96 : x
  2. Step 2: Convert to fraction form
    316,358.90/436,575.26 = 173,118.96/x
  3. Step 3: Cross multiply
    316,358.90x = 436,575.26 × 173,118.96
  4. Step 4: Simplify right side
    316,358.90x = 75,579,454,972.93
  5. Step 5: Solve for x
    x = 75,579,454,972.93/316,358.90
  6. Step 6: Final answer
    x = 238,904.15

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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.