Home / 378,349.09-522,096.47-217,181.77

Finding the Fourth Proportional to 378,349.09, 522,096.47 and 217,181.77

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Solution

The fourth proportional to 378,349.09, 522,096.47 and 217,181.77 is: 299,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,349.09 : 522,096.47 = 217,181.77 : x
  2. Step 2: Convert to fraction form
    378,349.09/522,096.47 = 217,181.77/x
  3. Step 3: Cross multiply
    378,349.09x = 522,096.47 × 217,181.77
  4. Step 4: Simplify right side
    378,349.09x = 113,389,833,074.20
  5. Step 5: Solve for x
    x = 113,389,833,074.20/378,349.09
  6. Step 6: Final answer
    x = 299,696.33

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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.