Home / 378,850.14-522,810.75-209,084.22

Finding the Fourth Proportional to 378,850.14, 522,810.75 and 209,084.22

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Solution

The fourth proportional to 378,850.14, 522,810.75 and 209,084.22 is: 288,534.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,850.14 : 522,810.75 = 209,084.22 : x
  2. Step 2: Convert to fraction form
    378,850.14/522,810.75 = 209,084.22/x
  3. Step 3: Cross multiply
    378,850.14x = 522,810.75 × 209,084.22
  4. Step 4: Simplify right side
    378,850.14x = 109,311,477,871.37
  5. Step 5: Solve for x
    x = 109,311,477,871.37/378,850.14
  6. Step 6: Final answer
    x = 288,534.88

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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.