Home / 355,236,647.50-490,201,687.22-206,547,219.78

Finding the Fourth Proportional to 355,236,647.50, 490,201,687.22 and 206,547,219.78

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Solution

The fourth proportional to 355,236,647.50, 490,201,687.22 and 206,547,219.78 is: 285,020,693.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,236,647.50 : 490,201,687.22 = 206,547,219.78 : x
  2. Step 2: Convert to fraction form
    355,236,647.50/490,201,687.22 = 206,547,219.78/x
  3. Step 3: Cross multiply
    355,236,647.50x = 490,201,687.22 × 206,547,219.78
  4. Step 4: Simplify right side
    355,236,647.50x = 101,249,795,624,758,864
  5. Step 5: Solve for x
    x = 101,249,795,624,758,864/355,236,647.50
  6. Step 6: Final answer
    x = 285,020,693.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.