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Finding the Fourth Proportional to 245,317.40, 367,976.10 and 76,839.12

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Solution

The fourth proportional to 245,317.40, 367,976.10 and 76,839.12 is: 115,258.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,317.40 : 367,976.10 = 76,839.12 : x
  2. Step 2: Convert to fraction form
    245,317.40/367,976.10 = 76,839.12/x
  3. Step 3: Cross multiply
    245,317.40x = 367,976.10 × 76,839.12
  4. Step 4: Simplify right side
    245,317.40x = 28,274,959,705.03
  5. Step 5: Solve for x
    x = 28,274,959,705.03/245,317.40
  6. Step 6: Final answer
    x = 115,258.68

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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.