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Finding the Fourth Proportional to 449,997.79, 621,153.21 and 259,087.27

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Solution

The fourth proportional to 449,997.79, 621,153.21 and 259,087.27 is: 357,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,997.79 : 621,153.21 = 259,087.27 : x
  2. Step 2: Convert to fraction form
    449,997.79/621,153.21 = 259,087.27/x
  3. Step 3: Cross multiply
    449,997.79x = 621,153.21 × 259,087.27
  4. Step 4: Simplify right side
    449,997.79x = 160,932,889,430.64
  5. Step 5: Solve for x
    x = 160,932,889,430.64/449,997.79
  6. Step 6: Final answer
    x = 357,630.40

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1.5x scale

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.