Home / 309,973.47-427,757.09-172,145.08

Finding the Fourth Proportional to 309,973.47, 427,757.09 and 172,145.08

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Solution

The fourth proportional to 309,973.47, 427,757.09 and 172,145.08 is: 237,556.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,973.47 : 427,757.09 = 172,145.08 : x
  2. Step 2: Convert to fraction form
    309,973.47/427,757.09 = 172,145.08/x
  3. Step 3: Cross multiply
    309,973.47x = 427,757.09 × 172,145.08
  4. Step 4: Simplify right side
    309,973.47x = 73,636,278,152.59
  5. Step 5: Solve for x
    x = 73,636,278,152.59/309,973.47
  6. Step 6: Final answer
    x = 237,556.71

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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.