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Finding the Fourth Proportional to 380,563.68, 570,140.83 and 190,802.55

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Solution

The fourth proportional to 380,563.68, 570,140.83 and 190,802.55 is: 285,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,563.68 : 570,140.83 = 190,802.55 : x
  2. Step 2: Convert to fraction form
    380,563.68/570,140.83 = 190,802.55/x
  3. Step 3: Cross multiply
    380,563.68x = 570,140.83 × 190,802.55
  4. Step 4: Simplify right side
    380,563.68x = 108,784,325,526.38
  5. Step 5: Solve for x
    x = 108,784,325,526.38/380,563.68
  6. Step 6: Final answer
    x = 285,850.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.