Home / 380,571.12-525,186.72-210,801.60

Finding the Fourth Proportional to 380,571.12, 525,186.72 and 210,801.60

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Solution

The fourth proportional to 380,571.12, 525,186.72 and 210,801.60 is: 290,905.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,571.12 : 525,186.72 = 210,801.60 : x
  2. Step 2: Convert to fraction form
    380,571.12/525,186.72 = 210,801.60/x
  3. Step 3: Cross multiply
    380,571.12x = 525,186.72 × 210,801.60
  4. Step 4: Simplify right side
    380,571.12x = 110,710,200,874.75
  5. Step 5: Solve for x
    x = 110,710,200,874.75/380,571.12
  6. Step 6: Final answer
    x = 290,905.42

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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.