Home / 380,986.19-525,784.52-211,220.31

Finding the Fourth Proportional to 380,986.19, 525,784.52 and 211,220.31

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Solution

The fourth proportional to 380,986.19, 525,784.52 and 211,220.31 is: 291,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,986.19 : 525,784.52 = 211,220.31 : x
  2. Step 2: Convert to fraction form
    380,986.19/525,784.52 = 211,220.31/x
  3. Step 3: Cross multiply
    380,986.19x = 525,784.52 × 211,220.31
  4. Step 4: Simplify right side
    380,986.19x = 111,056,368,251.50
  5. Step 5: Solve for x
    x = 111,056,368,251.50/380,986.19
  6. Step 6: Final answer
    x = 291,497.10

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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.