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Finding the Fourth Proportional to 258,855.45, 357,150.78 and 151,451.88

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Solution

The fourth proportional to 258,855.45, 357,150.78 and 151,451.88 is: 208,962.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,855.45 : 357,150.78 = 151,451.88 : x
  2. Step 2: Convert to fraction form
    258,855.45/357,150.78 = 151,451.88/x
  3. Step 3: Cross multiply
    258,855.45x = 357,150.78 × 151,451.88
  4. Step 4: Simplify right side
    258,855.45x = 54,091,157,074.47
  5. Step 5: Solve for x
    x = 54,091,157,074.47/258,855.45
  6. Step 6: Final answer
    x = 208,962.79

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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.