Home / 231,977,930.78-320,141,036.51-143,900,307.06

Finding the Fourth Proportional to 231,977,930.78, 320,141,036.51 and 143,900,307.06

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Solution

The fourth proportional to 231,977,930.78, 320,141,036.51 and 143,900,307.06 is: 198,589,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,977,930.78 : 320,141,036.51 = 143,900,307.06 : x
  2. Step 2: Convert to fraction form
    231,977,930.78/320,141,036.51 = 143,900,307.06/x
  3. Step 3: Cross multiply
    231,977,930.78x = 320,141,036.51 × 143,900,307.06
  4. Step 4: Simplify right side
    231,977,930.78x = 46,068,393,455,576,168
  5. Step 5: Solve for x
    x = 46,068,393,455,576,168/231,977,930.78
  6. Step 6: Final answer
    x = 198,589,552.47

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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.