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Finding the Fourth Proportional to 245,320.80, 367,981.20 and 127,222.80

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Solution

The fourth proportional to 245,320.80, 367,981.20 and 127,222.80 is: 190,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,320.80 : 367,981.20 = 127,222.80 : x
  2. Step 2: Convert to fraction form
    245,320.80/367,981.20 = 127,222.80/x
  3. Step 3: Cross multiply
    245,320.80x = 367,981.20 × 127,222.80
  4. Step 4: Simplify right side
    245,320.80x = 46,815,598,611.36
  5. Step 5: Solve for x
    x = 46,815,598,611.36/245,320.80
  6. Step 6: Final answer
    x = 190,834.20

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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.