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Finding the Fourth Proportional to 245,495.89, 338,669.94 and 159,448.78

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Solution

The fourth proportional to 245,495.89, 338,669.94 and 159,448.78 is: 219,965.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,495.89 : 338,669.94 = 159,448.78 : x
  2. Step 2: Convert to fraction form
    245,495.89/338,669.94 = 159,448.78/x
  3. Step 3: Cross multiply
    245,495.89x = 338,669.94 × 159,448.78
  4. Step 4: Simplify right side
    245,495.89x = 54,000,508,755.67
  5. Step 5: Solve for x
    x = 54,000,508,755.67/245,495.89
  6. Step 6: Final answer
    x = 219,965.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.