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Finding the Fourth Proportional to 258,830.60, 388,464.60 and 101,172.20

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Solution

The fourth proportional to 258,830.60, 388,464.60 and 101,172.20 is: 151,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,830.60 : 388,464.60 = 101,172.20 : x
  2. Step 2: Convert to fraction form
    258,830.60/388,464.60 = 101,172.20/x
  3. Step 3: Cross multiply
    258,830.60x = 388,464.60 × 101,172.20
  4. Step 4: Simplify right side
    258,830.60x = 39,301,818,204.12
  5. Step 5: Solve for x
    x = 39,301,818,204.12/258,830.60
  6. Step 6: Final answer
    x = 151,843.79

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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.