Home / 380,620.42-525,217.90-210,822.82

Finding the Fourth Proportional to 380,620.42, 525,217.90 and 210,822.82

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Solution

The fourth proportional to 380,620.42, 525,217.90 and 210,822.82 is: 290,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,620.42 : 525,217.90 = 210,822.82 : x
  2. Step 2: Convert to fraction form
    380,620.42/525,217.90 = 210,822.82/x
  3. Step 3: Cross multiply
    380,620.42x = 525,217.90 × 210,822.82
  4. Step 4: Simplify right side
    380,620.42x = 110,727,918,792.48
  5. Step 5: Solve for x
    x = 110,727,918,792.48/380,620.42
  6. Step 6: Final answer
    x = 290,914.29

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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.