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Finding the Fourth Proportional to 439,883.80, 660,157.42 and 321,859.64

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Solution

The fourth proportional to 439,883.80, 660,157.42 and 321,859.64 is: 483,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,883.80 : 660,157.42 = 321,859.64 : x
  2. Step 2: Convert to fraction form
    439,883.80/660,157.42 = 321,859.64/x
  3. Step 3: Cross multiply
    439,883.80x = 660,157.42 × 321,859.64
  4. Step 4: Simplify right side
    439,883.80x = 212,478,029,544.53
  5. Step 5: Solve for x
    x = 212,478,029,544.53/439,883.80
  6. Step 6: Final answer
    x = 483,032.18

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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.