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Finding the Fourth Proportional to 362,486.40, 543,729.60 and 278,408.40

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Solution

The fourth proportional to 362,486.40, 543,729.60 and 278,408.40 is: 417,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,486.40 : 543,729.60 = 278,408.40 : x
  2. Step 2: Convert to fraction form
    362,486.40/543,729.60 = 278,408.40/x
  3. Step 3: Cross multiply
    362,486.40x = 543,729.60 × 278,408.40
  4. Step 4: Simplify right side
    362,486.40x = 151,378,887,968.64
  5. Step 5: Solve for x
    x = 151,378,887,968.64/362,486.40
  6. Step 6: Final answer
    x = 417,612.60

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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.