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Finding the Fourth Proportional to 372,983.88, 559,963.56 and 221,457.54

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Solution

The fourth proportional to 372,983.88, 559,963.56 and 221,457.54 is: 332,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,983.88 : 559,963.56 = 221,457.54 : x
  2. Step 2: Convert to fraction form
    372,983.88/559,963.56 = 221,457.54/x
  3. Step 3: Cross multiply
    372,983.88x = 559,963.56 × 221,457.54
  4. Step 4: Simplify right side
    372,983.88x = 124,008,152,487.24
  5. Step 5: Solve for x
    x = 124,008,152,487.24/372,983.88
  6. Step 6: Final answer
    x = 332,475.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.