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Finding the Fourth Proportional to 372,763, 514,461.54 and 221,860

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Solution

The fourth proportional to 372,763, 514,461.54 and 221,860 is: 306,195.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,763 : 514,461.54 = 221,860 : x
  2. Step 2: Convert to fraction form
    372,763/514,461.54 = 221,860/x
  3. Step 3: Cross multiply
    372,763x = 514,461.54 × 221,860
  4. Step 4: Simplify right side
    372,763x = 114,138,437,264.40
  5. Step 5: Solve for x
    x = 114,138,437,264.40/372,763
  6. Step 6: Final answer
    x = 306,195.73

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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.