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Finding the Fourth Proportional to 380,580.80, 570,936.85 and 127,885.55

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Solution

The fourth proportional to 380,580.80, 570,936.85 and 127,885.55 is: 191,850.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,580.80 : 570,936.85 = 127,885.55 : x
  2. Step 2: Convert to fraction form
    380,580.80/570,936.85 = 127,885.55/x
  3. Step 3: Cross multiply
    380,580.80x = 570,936.85 × 127,885.55
  4. Step 4: Simplify right side
    380,580.80x = 73,014,569,903.12
  5. Step 5: Solve for x
    x = 73,014,569,903.12/380,580.80
  6. Step 6: Final answer
    x = 191,850.38

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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.