Home / 286,126.20-430,226.10-279,905.40

Finding the Fourth Proportional to 286,126.20, 430,226.10 and 279,905.40

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Solution

The fourth proportional to 286,126.20, 430,226.10 and 279,905.40 is: 420,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,126.20 : 430,226.10 = 279,905.40 : x
  2. Step 2: Convert to fraction form
    286,126.20/430,226.10 = 279,905.40/x
  3. Step 3: Cross multiply
    286,126.20x = 430,226.10 × 279,905.40
  4. Step 4: Simplify right side
    286,126.20x = 120,422,608,610.94
  5. Step 5: Solve for x
    x = 120,422,608,610.94/286,126.20
  6. Step 6: Final answer
    x = 420,872.36

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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.