Home / 258,697,098.20-388,099,560.90-86,227,491.80

Finding the Fourth Proportional to 258,697,098.20, 388,099,560.90 and 86,227,491.80

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Solution

The fourth proportional to 258,697,098.20, 388,099,560.90 and 86,227,491.80 is: 129,359,207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,697,098.20 : 388,099,560.90 = 86,227,491.80 : x
  2. Step 2: Convert to fraction form
    258,697,098.20/388,099,560.90 = 86,227,491.80/x
  3. Step 3: Cross multiply
    258,697,098.20x = 388,099,560.90 × 86,227,491.80
  4. Step 4: Simplify right side
    258,697,098.20x = 33,464,851,705,088,348
  5. Step 5: Solve for x
    x = 33,464,851,705,088,348/258,697,098.20
  6. Step 6: Final answer
    x = 129,359,207.88

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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.