Home / 291,429.19-399,259.46-280,508.05

Finding the Fourth Proportional to 291,429.19, 399,259.46 and 280,508.05

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Solution

The fourth proportional to 291,429.19, 399,259.46 and 280,508.05 is: 384,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,429.19 : 399,259.46 = 280,508.05 : x
  2. Step 2: Convert to fraction form
    291,429.19/399,259.46 = 280,508.05/x
  3. Step 3: Cross multiply
    291,429.19x = 399,259.46 × 280,508.05
  4. Step 4: Simplify right side
    291,429.19x = 111,995,492,568.65
  5. Step 5: Solve for x
    x = 111,995,492,568.65/291,429.19
  6. Step 6: Final answer
    x = 384,297.44

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.