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Finding the Fourth Proportional to 269,898, 372,492.05 and 156,720.75

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Solution

The fourth proportional to 269,898, 372,492.05 and 156,720.75 is: 216,293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,898 : 372,492.05 = 156,720.75 : x
  2. Step 2: Convert to fraction form
    269,898/372,492.05 = 156,720.75/x
  3. Step 3: Cross multiply
    269,898x = 372,492.05 × 156,720.75
  4. Step 4: Simplify right side
    269,898x = 58,377,232,661.43
  5. Step 5: Solve for x
    x = 58,377,232,661.43/269,898
  6. Step 6: Final answer
    x = 216,293.68

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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.