Home / 355,904,940.78-491,153,888.57-205,194,615.14

Finding the Fourth Proportional to 355,904,940.78, 491,153,888.57 and 205,194,615.14

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Solution

The fourth proportional to 355,904,940.78, 491,153,888.57 and 205,194,615.14 is: 283,171,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,904,940.78 : 491,153,888.57 = 205,194,615.14 : x
  2. Step 2: Convert to fraction form
    355,904,940.78/491,153,888.57 = 205,194,615.14/x
  3. Step 3: Cross multiply
    355,904,940.78x = 491,153,888.57 × 205,194,615.14
  4. Step 4: Simplify right side
    355,904,940.78x = 100,782,133,139,428,160
  5. Step 5: Solve for x
    x = 100,782,133,139,428,160/355,904,940.78
  6. Step 6: Final answer
    x = 283,171,492.13

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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.