Home / 307,801.86-424,431.75-200,172.30

Finding the Fourth Proportional to 307,801.86, 424,431.75 and 200,172.30

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Solution

The fourth proportional to 307,801.86, 424,431.75 and 200,172.30 is: 276,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,801.86 : 424,431.75 = 200,172.30 : x
  2. Step 2: Convert to fraction form
    307,801.86/424,431.75 = 200,172.30/x
  3. Step 3: Cross multiply
    307,801.86x = 424,431.75 × 200,172.30
  4. Step 4: Simplify right side
    307,801.86x = 84,959,479,590.53
  5. Step 5: Solve for x
    x = 84,959,479,590.53/307,801.86
  6. Step 6: Final answer
    x = 276,020.03

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1.5x scale

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.