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Finding the Fourth Proportional to 258,843.60, 388,411.20 and 101,051.55

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Solution

The fourth proportional to 258,843.60, 388,411.20 and 101,051.55 is: 151,634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,843.60 : 388,411.20 = 101,051.55 : x
  2. Step 2: Convert to fraction form
    258,843.60/388,411.20 = 101,051.55/x
  3. Step 3: Cross multiply
    258,843.60x = 388,411.20 × 101,051.55
  4. Step 4: Simplify right side
    258,843.60x = 39,249,553,797.36
  5. Step 5: Solve for x
    x = 39,249,553,797.36/258,843.60
  6. Step 6: Final answer
    x = 151,634.24

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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.