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Finding the Fourth Proportional to 439,883.30, 660,156.67 and 321,859.14

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Solution

The fourth proportional to 439,883.30, 660,156.67 and 321,859.14 is: 483,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,883.30 : 660,156.67 = 321,859.14 : x
  2. Step 2: Convert to fraction form
    439,883.30/660,156.67 = 321,859.14/x
  3. Step 3: Cross multiply
    439,883.30x = 660,156.67 × 321,859.14
  4. Step 4: Simplify right side
    439,883.30x = 212,477,458,071.46
  5. Step 5: Solve for x
    x = 212,477,458,071.46/439,883.30
  6. Step 6: Final answer
    x = 483,031.43

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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.