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Finding the Fourth Proportional to 372,763.50, 514,462.23 and 221,860.50

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Solution

The fourth proportional to 372,763.50, 514,462.23 and 221,860.50 is: 306,196.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,763.50 : 514,462.23 = 221,860.50 : x
  2. Step 2: Convert to fraction form
    372,763.50/514,462.23 = 221,860.50/x
  3. Step 3: Cross multiply
    372,763.50x = 514,462.23 × 221,860.50
  4. Step 4: Simplify right side
    372,763.50x = 114,138,847,578.92
  5. Step 5: Solve for x
    x = 114,138,847,578.92/372,763.50
  6. Step 6: Final answer
    x = 306,196.42

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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.