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Finding the Fourth Proportional to 245,806.19, 339,244.88 and 138,397.16

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Solution

The fourth proportional to 245,806.19, 339,244.88 and 138,397.16 is: 191,006.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,806.19 : 339,244.88 = 138,397.16 : x
  2. Step 2: Convert to fraction form
    245,806.19/339,244.88 = 138,397.16/x
  3. Step 3: Cross multiply
    245,806.19x = 339,244.88 × 138,397.16
  4. Step 4: Simplify right side
    245,806.19x = 46,950,527,936.54
  5. Step 5: Solve for x
    x = 46,950,527,936.54/245,806.19
  6. Step 6: Final answer
    x = 191,006.29

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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.