Home / 309,915,736.52-427,703,059.14-170,686,461.38

Finding the Fourth Proportional to 309,915,736.52, 427,703,059.14 and 170,686,461.38

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Solution

The fourth proportional to 309,915,736.52, 427,703,059.14 and 170,686,461.38 is: 235,557,969.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,915,736.52 : 427,703,059.14 = 170,686,461.38 : x
  2. Step 2: Convert to fraction form
    309,915,736.52/427,703,059.14 = 170,686,461.38/x
  3. Step 3: Cross multiply
    309,915,736.52x = 427,703,059.14 × 170,686,461.38
  4. Step 4: Simplify right side
    309,915,736.52x = 73,003,121,687,076,720
  5. Step 5: Solve for x
    x = 73,003,121,687,076,720/309,915,736.52
  6. Step 6: Final answer
    x = 235,557,969.74

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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.