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Finding the Fourth Proportional to 281,805.06, 388,891.90 and 152,745.64

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Solution

The fourth proportional to 281,805.06, 388,891.90 and 152,745.64 is: 210,789.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,805.06 : 388,891.90 = 152,745.64 : x
  2. Step 2: Convert to fraction form
    281,805.06/388,891.90 = 152,745.64/x
  3. Step 3: Cross multiply
    281,805.06x = 388,891.90 × 152,745.64
  4. Step 4: Simplify right side
    281,805.06x = 59,401,542,156.32
  5. Step 5: Solve for x
    x = 59,401,542,156.32/281,805.06
  6. Step 6: Final answer
    x = 210,789.48

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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.