Home / 258,015.52-387,170.70-100,223.47

Finding the Fourth Proportional to 258,015.52, 387,170.70 and 100,223.47

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Solution

The fourth proportional to 258,015.52, 387,170.70 and 100,223.47 is: 150,392.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,015.52 : 387,170.70 = 100,223.47 : x
  2. Step 2: Convert to fraction form
    258,015.52/387,170.70 = 100,223.47/x
  3. Step 3: Cross multiply
    258,015.52x = 387,170.70 × 100,223.47
  4. Step 4: Simplify right side
    258,015.52x = 38,803,591,036.33
  5. Step 5: Solve for x
    x = 38,803,591,036.33/258,015.52
  6. Step 6: Final answer
    x = 150,392.47

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1.5x scale

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.