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Finding the Fourth Proportional to 439,884.30, 660,158.17 and 321,860.14

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Solution

The fourth proportional to 439,884.30, 660,158.17 and 321,860.14 is: 483,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,884.30 : 660,158.17 = 321,860.14 : x
  2. Step 2: Convert to fraction form
    439,884.30/660,158.17 = 321,860.14/x
  3. Step 3: Cross multiply
    439,884.30x = 660,158.17 × 321,860.14
  4. Step 4: Simplify right side
    439,884.30x = 212,478,601,018.34
  5. Step 5: Solve for x
    x = 212,478,601,018.34/439,884.30
  6. Step 6: Final answer
    x = 483,032.93

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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.