Home / 347,640,986.40-521,461,479.60-218,339,422.80

Finding the Fourth Proportional to 347,640,986.40, 521,461,479.60 and 218,339,422.80

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Solution

The fourth proportional to 347,640,986.40, 521,461,479.60 and 218,339,422.80 is: 327,509,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,640,986.40 : 521,461,479.60 = 218,339,422.80 : x
  2. Step 2: Convert to fraction form
    347,640,986.40/521,461,479.60 = 218,339,422.80/x
  3. Step 3: Cross multiply
    347,640,986.40x = 521,461,479.60 × 218,339,422.80
  4. Step 4: Simplify right side
    347,640,986.40x = 113,855,598,468,297,984
  5. Step 5: Solve for x
    x = 113,855,598,468,297,984/347,640,986.40
  6. Step 6: Final answer
    x = 327,509,134.20

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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.