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Finding the Fourth Proportional to 258,795.98, 388,199.13 and 69,256.04

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Solution

The fourth proportional to 258,795.98, 388,199.13 and 69,256.04 is: 103,885.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,795.98 : 388,199.13 = 69,256.04 : x
  2. Step 2: Convert to fraction form
    258,795.98/388,199.13 = 69,256.04/x
  3. Step 3: Cross multiply
    258,795.98x = 388,199.13 × 69,256.04
  4. Step 4: Simplify right side
    258,795.98x = 26,885,134,128.97
  5. Step 5: Solve for x
    x = 26,885,134,128.97/258,795.98
  6. Step 6: Final answer
    x = 103,885.44

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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.