Home / 258,864.08-388,137.56-100,908

Finding the Fourth Proportional to 258,864.08, 388,137.56 and 100,908

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Solution

The fourth proportional to 258,864.08, 388,137.56 and 100,908 is: 151,300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,864.08 : 388,137.56 = 100,908 : x
  2. Step 2: Convert to fraction form
    258,864.08/388,137.56 = 100,908/x
  3. Step 3: Cross multiply
    258,864.08x = 388,137.56 × 100,908
  4. Step 4: Simplify right side
    258,864.08x = 39,166,184,399.94
  5. Step 5: Solve for x
    x = 39,166,184,399.94/258,864.08
  6. Step 6: Final answer
    x = 151,300.19

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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.