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Finding the Fourth Proportional to 185,408.40, 278,112.60 and 162,080.40

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Solution

The fourth proportional to 185,408.40, 278,112.60 and 162,080.40 is: 243,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,408.40 : 278,112.60 = 162,080.40 : x
  2. Step 2: Convert to fraction form
    185,408.40/278,112.60 = 162,080.40/x
  3. Step 3: Cross multiply
    185,408.40x = 278,112.60 × 162,080.40
  4. Step 4: Simplify right side
    185,408.40x = 45,076,601,453.04
  5. Step 5: Solve for x
    x = 45,076,601,453.04/185,408.40
  6. Step 6: Final answer
    x = 243,120.60

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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.