Home / 258,867.36-388,350-101,085.84

Finding the Fourth Proportional to 258,867.36, 388,350 and 101,085.84

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Solution

The fourth proportional to 258,867.36, 388,350 and 101,085.84 is: 151,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,867.36 : 388,350 = 101,085.84 : x
  2. Step 2: Convert to fraction form
    258,867.36/388,350 = 101,085.84/x
  3. Step 3: Cross multiply
    258,867.36x = 388,350 × 101,085.84
  4. Step 4: Simplify right side
    258,867.36x = 39,256,685,964
  5. Step 5: Solve for x
    x = 39,256,685,964/258,867.36
  6. Step 6: Final answer
    x = 151,647.88

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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.