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Finding the Fourth Proportional to 245,398.26, 338,647.59 and 154,812.72

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Solution

The fourth proportional to 245,398.26, 338,647.59 and 154,812.72 is: 213,640.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,398.26 : 338,647.59 = 154,812.72 : x
  2. Step 2: Convert to fraction form
    245,398.26/338,647.59 = 154,812.72/x
  3. Step 3: Cross multiply
    245,398.26x = 338,647.59 × 154,812.72
  4. Step 4: Simplify right side
    245,398.26x = 52,426,954,529.34
  5. Step 5: Solve for x
    x = 52,426,954,529.34/245,398.26
  6. Step 6: Final answer
    x = 213,640.29

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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.