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Finding the Fourth Proportional to 275,897.44, 380,745.23 and 155,031.48

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Solution

The fourth proportional to 275,897.44, 380,745.23 and 155,031.48 is: 213,947.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,897.44 : 380,745.23 = 155,031.48 : x
  2. Step 2: Convert to fraction form
    275,897.44/380,745.23 = 155,031.48/x
  3. Step 3: Cross multiply
    275,897.44x = 380,745.23 × 155,031.48
  4. Step 4: Simplify right side
    275,897.44x = 59,027,496,509.84
  5. Step 5: Solve for x
    x = 59,027,496,509.84/275,897.44
  6. Step 6: Final answer
    x = 213,947.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.