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Finding the Fourth Proportional to 203,313.20, 304,751.10 and 76,904.60

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Solution

The fourth proportional to 203,313.20, 304,751.10 and 76,904.60 is: 115,274.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,313.20 : 304,751.10 = 76,904.60 : x
  2. Step 2: Convert to fraction form
    203,313.20/304,751.10 = 76,904.60/x
  3. Step 3: Cross multiply
    203,313.20x = 304,751.10 × 76,904.60
  4. Step 4: Simplify right side
    203,313.20x = 23,436,761,445.06
  5. Step 5: Solve for x
    x = 23,436,761,445.06/203,313.20
  6. Step 6: Final answer
    x = 115,274.18

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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.