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Finding the Fourth Proportional to 352,676.22, 530,921.04 and 321,288

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Solution

The fourth proportional to 352,676.22, 530,921.04 and 321,288 is: 483,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,676.22 : 530,921.04 = 321,288 : x
  2. Step 2: Convert to fraction form
    352,676.22/530,921.04 = 321,288/x
  3. Step 3: Cross multiply
    352,676.22x = 530,921.04 × 321,288
  4. Step 4: Simplify right side
    352,676.22x = 170,578,559,099.52
  5. Step 5: Solve for x
    x = 170,578,559,099.52/352,676.22
  6. Step 6: Final answer
    x = 483,669.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.