Home / 393,222,296,024.70-542,647,711,779.75-212,783,139,489.66

Finding the Fourth Proportional to 393,222,296,024.70, 542,647,711,779.75 and 212,783,139,489.66

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Solution

The fourth proportional to 393,222,296,024.70, 542,647,711,779.75 and 212,783,139,489.66 is: 293,641,242,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,222,296,024.70 : 542,647,711,779.75 = 212,783,139,489.66 : x
  2. Step 2: Convert to fraction form
    393,222,296,024.70/542,647,711,779.75 = 212,783,139,489.66/x
  3. Step 3: Cross multiply
    393,222,296,024.70x = 542,647,711,779.75 × 212,783,139,489.66
  4. Step 4: Simplify right side
    393,222,296,024.70x = 115,466,283,749,375,368,757,248
  5. Step 5: Solve for x
    x = 115,466,283,749,375,368,757,248/393,222,296,024.70
  6. Step 6: Final answer
    x = 293,641,242,922.10

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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.