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Finding the Fourth Proportional to 245,309.80, 367,964.70 and 127,211.80

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Solution

The fourth proportional to 245,309.80, 367,964.70 and 127,211.80 is: 190,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,309.80 : 367,964.70 = 127,211.80 : x
  2. Step 2: Convert to fraction form
    245,309.80/367,964.70 = 127,211.80/x
  3. Step 3: Cross multiply
    245,309.80x = 367,964.70 × 127,211.80
  4. Step 4: Simplify right side
    245,309.80x = 46,809,451,823.46
  5. Step 5: Solve for x
    x = 46,809,451,823.46/245,309.80
  6. Step 6: Final answer
    x = 190,817.70

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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.