Home / 286,837.20-430,255.80-285,087.60

Finding the Fourth Proportional to 286,837.20, 430,255.80 and 285,087.60

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Solution

The fourth proportional to 286,837.20, 430,255.80 and 285,087.60 is: 427,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,837.20 : 430,255.80 = 285,087.60 : x
  2. Step 2: Convert to fraction form
    286,837.20/430,255.80 = 285,087.60/x
  3. Step 3: Cross multiply
    286,837.20x = 430,255.80 × 285,087.60
  4. Step 4: Simplify right side
    286,837.20x = 122,660,593,408.08
  5. Step 5: Solve for x
    x = 122,660,593,408.08/286,837.20
  6. Step 6: Final answer
    x = 427,631.40

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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.