Home / 309,975.97-427,781.02-172,155.44

Finding the Fourth Proportional to 309,975.97, 427,781.02 and 172,155.44

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Solution

The fourth proportional to 309,975.97, 427,781.02 and 172,155.44 is: 237,582.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,975.97 : 427,781.02 = 172,155.44 : x
  2. Step 2: Convert to fraction form
    309,975.97/427,781.02 = 172,155.44/x
  3. Step 3: Cross multiply
    309,975.97x = 427,781.02 × 172,155.44
  4. Step 4: Simplify right side
    309,975.97x = 73,644,828,636.81
  5. Step 5: Solve for x
    x = 73,644,828,636.81/309,975.97
  6. Step 6: Final answer
    x = 237,582.38

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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.