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Finding the Fourth Proportional to 210,003.75, 314,907.09 and 76,790.85

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Solution

The fourth proportional to 210,003.75, 314,907.09 and 76,790.85 is: 115,150.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,003.75 : 314,907.09 = 76,790.85 : x
  2. Step 2: Convert to fraction form
    210,003.75/314,907.09 = 76,790.85/x
  3. Step 3: Cross multiply
    210,003.75x = 314,907.09 × 76,790.85
  4. Step 4: Simplify right side
    210,003.75x = 24,181,983,112.13
  5. Step 5: Solve for x
    x = 24,181,983,112.13/210,003.75
  6. Step 6: Final answer
    x = 115,150.24

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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.