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Finding the Fourth Proportional to 258,066.84, 387,100.11 and 80,589.06

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Solution

The fourth proportional to 258,066.84, 387,100.11 and 80,589.06 is: 120,883.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,066.84 : 387,100.11 = 80,589.06 : x
  2. Step 2: Convert to fraction form
    258,066.84/387,100.11 = 80,589.06/x
  3. Step 3: Cross multiply
    258,066.84x = 387,100.11 × 80,589.06
  4. Step 4: Simplify right side
    258,066.84x = 31,196,032,055.30
  5. Step 5: Solve for x
    x = 31,196,032,055.30/258,066.84
  6. Step 6: Final answer
    x = 120,883.54

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1.5x scale

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.