Home / 309,962.93-427,763.05-172,142.48

Finding the Fourth Proportional to 309,962.93, 427,763.05 and 172,142.48

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Solution

The fourth proportional to 309,962.93, 427,763.05 and 172,142.48 is: 237,564.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,962.93 : 427,763.05 = 172,142.48 : x
  2. Step 2: Convert to fraction form
    309,962.93/427,763.05 = 172,142.48/x
  3. Step 3: Cross multiply
    309,962.93x = 427,763.05 × 172,142.48
  4. Step 4: Simplify right side
    309,962.93x = 73,636,191,418.65
  5. Step 5: Solve for x
    x = 73,636,191,418.65/309,962.93
  6. Step 6: Final answer
    x = 237,564.51

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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.