Home / 285,370,422.16-393,813,198.12-154,990,230.16

Finding the Fourth Proportional to 285,370,422.16, 393,813,198.12 and 154,990,230.16

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Solution

The fourth proportional to 285,370,422.16, 393,813,198.12 and 154,990,230.16 is: 213,887,612.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,370,422.16 : 393,813,198.12 = 154,990,230.16 : x
  2. Step 2: Convert to fraction form
    285,370,422.16/393,813,198.12 = 154,990,230.16/x
  3. Step 3: Cross multiply
    285,370,422.16x = 393,813,198.12 × 154,990,230.16
  4. Step 4: Simplify right side
    285,370,422.16x = 61,037,198,216,664,480
  5. Step 5: Solve for x
    x = 61,037,198,216,664,480/285,370,422.16
  6. Step 6: Final answer
    x = 213,887,612.30

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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.