Home / 388,339,747.20-582,509,620.80-206,941,219.20

Finding the Fourth Proportional to 388,339,747.20, 582,509,620.80 and 206,941,219.20

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Solution

The fourth proportional to 388,339,747.20, 582,509,620.80 and 206,941,219.20 is: 310,411,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,339,747.20 : 582,509,620.80 = 206,941,219.20 : x
  2. Step 2: Convert to fraction form
    388,339,747.20/582,509,620.80 = 206,941,219.20/x
  3. Step 3: Cross multiply
    388,339,747.20x = 582,509,620.80 × 206,941,219.20
  4. Step 4: Simplify right side
    388,339,747.20x = 120,545,251,124,081,664
  5. Step 5: Solve for x
    x = 120,545,251,124,081,664/388,339,747.20
  6. Step 6: Final answer
    x = 310,411,828.80

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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.