Home / 281,443,651.20-422,039,505.60-128,010,729.60

Finding the Fourth Proportional to 281,443,651.20, 422,039,505.60 and 128,010,729.60

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Solution

The fourth proportional to 281,443,651.20, 422,039,505.60 and 128,010,729.60 is: 191,958,798.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,443,651.20 : 422,039,505.60 = 128,010,729.60 : x
  2. Step 2: Convert to fraction form
    281,443,651.20/422,039,505.60 = 128,010,729.60/x
  3. Step 3: Cross multiply
    281,443,651.20x = 422,039,505.60 × 128,010,729.60
  4. Step 4: Simplify right side
    281,443,651.20x = 54,025,585,031,879,288
  5. Step 5: Solve for x
    x = 54,025,585,031,879,288/281,443,651.20
  6. Step 6: Final answer
    x = 191,958,798.15

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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.