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Finding the Fourth Proportional to 216,026.70, 324,428.85 and 156,929.10

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Solution

The fourth proportional to 216,026.70, 324,428.85 and 156,929.10 is: 235,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,026.70 : 324,428.85 = 156,929.10 : x
  2. Step 2: Convert to fraction form
    216,026.70/324,428.85 = 156,929.10/x
  3. Step 3: Cross multiply
    216,026.70x = 324,428.85 × 156,929.10
  4. Step 4: Simplify right side
    216,026.70x = 50,912,327,444.54
  5. Step 5: Solve for x
    x = 50,912,327,444.54/216,026.70
  6. Step 6: Final answer
    x = 235,676.09

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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.