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Finding the Fourth Proportional to 247,221.80, 370,832.70 and 134,858.60

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Solution

The fourth proportional to 247,221.80, 370,832.70 and 134,858.60 is: 202,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,221.80 : 370,832.70 = 134,858.60 : x
  2. Step 2: Convert to fraction form
    247,221.80/370,832.70 = 134,858.60/x
  3. Step 3: Cross multiply
    247,221.80x = 370,832.70 × 134,858.60
  4. Step 4: Simplify right side
    247,221.80x = 50,009,978,756.22
  5. Step 5: Solve for x
    x = 50,009,978,756.22/247,221.80
  6. Step 6: Final answer
    x = 202,287.90

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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.