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Finding the Fourth Proportional to 269,898.75, 372,493.08 and 156,721.50

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Solution

The fourth proportional to 269,898.75, 372,493.08 and 156,721.50 is: 216,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,898.75 : 372,493.08 = 156,721.50 : x
  2. Step 2: Convert to fraction form
    269,898.75/372,493.08 = 156,721.50/x
  3. Step 3: Cross multiply
    269,898.75x = 372,493.08 × 156,721.50
  4. Step 4: Simplify right side
    269,898.75x = 58,377,674,237.22
  5. Step 5: Solve for x
    x = 58,377,674,237.22/269,898.75
  6. Step 6: Final answer
    x = 216,294.72

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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.