Home / 378,889.41-522,830.16-209,112.60

Finding the Fourth Proportional to 378,889.41, 522,830.16 and 209,112.60

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Solution

The fourth proportional to 378,889.41, 522,830.16 and 209,112.60 is: 288,554.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,889.41 : 522,830.16 = 209,112.60 : x
  2. Step 2: Convert to fraction form
    378,889.41/522,830.16 = 209,112.60/x
  3. Step 3: Cross multiply
    378,889.41x = 522,830.16 × 209,112.60
  4. Step 4: Simplify right side
    378,889.41x = 109,330,374,116.02
  5. Step 5: Solve for x
    x = 109,330,374,116.02/378,889.41
  6. Step 6: Final answer
    x = 288,554.84

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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.