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Finding the Fourth Proportional to 258,620.10, 357,120 and 190,754.70

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Solution

The fourth proportional to 258,620.10, 357,120 and 190,754.70 is: 263,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,620.10 : 357,120 = 190,754.70 : x
  2. Step 2: Convert to fraction form
    258,620.10/357,120 = 190,754.70/x
  3. Step 3: Cross multiply
    258,620.10x = 357,120 × 190,754.70
  4. Step 4: Simplify right side
    258,620.10x = 68,122,318,464.00
  5. Step 5: Solve for x
    x = 68,122,318,464.00/258,620.10
  6. Step 6: Final answer
    x = 263,406.90

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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.