Home / 253,231,765.60-379,847,648.40-212,417,096.80

Finding the Fourth Proportional to 253,231,765.60, 379,847,648.40 and 212,417,096.80

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Solution

The fourth proportional to 253,231,765.60, 379,847,648.40 and 212,417,096.80 is: 318,625,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,231,765.60 : 379,847,648.40 = 212,417,096.80 : x
  2. Step 2: Convert to fraction form
    253,231,765.60/379,847,648.40 = 212,417,096.80/x
  3. Step 3: Cross multiply
    253,231,765.60x = 379,847,648.40 × 212,417,096.80
  4. Step 4: Simplify right side
    253,231,765.60x = 80,686,134,699,435,168
  5. Step 5: Solve for x
    x = 80,686,134,699,435,168/253,231,765.60
  6. Step 6: Final answer
    x = 318,625,645.20

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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.