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Finding the Fourth Proportional to 190,878.96, 286,318.44 and 72,522.30

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Solution

The fourth proportional to 190,878.96, 286,318.44 and 72,522.30 is: 108,783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,878.96 : 286,318.44 = 72,522.30 : x
  2. Step 2: Convert to fraction form
    190,878.96/286,318.44 = 72,522.30/x
  3. Step 3: Cross multiply
    190,878.96x = 286,318.44 × 72,522.30
  4. Step 4: Simplify right side
    190,878.96x = 20,764,471,801.21
  5. Step 5: Solve for x
    x = 20,764,471,801.21/190,878.96
  6. Step 6: Final answer
    x = 108,783.45

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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.