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Finding the Fourth Proportional to 420,930.22, 631,457.83 and 154,669.96

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Solution

The fourth proportional to 420,930.22, 631,457.83 and 154,669.96 is: 232,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,930.22 : 631,457.83 = 154,669.96 : x
  2. Step 2: Convert to fraction form
    420,930.22/631,457.83 = 154,669.96/x
  3. Step 3: Cross multiply
    420,930.22x = 631,457.83 × 154,669.96
  4. Step 4: Simplify right side
    420,930.22x = 97,667,553,868.48
  5. Step 5: Solve for x
    x = 97,667,553,868.48/420,930.22
  6. Step 6: Final answer
    x = 232,027.90

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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.