Home / 258,870.08-388,146.55-100,914

Finding the Fourth Proportional to 258,870.08, 388,146.55 and 100,914

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Solution

The fourth proportional to 258,870.08, 388,146.55 and 100,914 is: 151,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,870.08 : 388,146.55 = 100,914 : x
  2. Step 2: Convert to fraction form
    258,870.08/388,146.55 = 100,914/x
  3. Step 3: Cross multiply
    258,870.08x = 388,146.55 × 100,914
  4. Step 4: Simplify right side
    258,870.08x = 39,169,420,946.70
  5. Step 5: Solve for x
    x = 39,169,420,946.70/258,870.08
  6. Step 6: Final answer
    x = 151,309.19

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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.