Home / 280,372.07-420,127.38-190,297.64

Finding the Fourth Proportional to 280,372.07, 420,127.38 and 190,297.64

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Solution

The fourth proportional to 280,372.07, 420,127.38 and 190,297.64 is: 285,154.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,372.07 : 420,127.38 = 190,297.64 : x
  2. Step 2: Convert to fraction form
    280,372.07/420,127.38 = 190,297.64/x
  3. Step 3: Cross multiply
    280,372.07x = 420,127.38 × 190,297.64
  4. Step 4: Simplify right side
    280,372.07x = 79,949,248,913.38
  5. Step 5: Solve for x
    x = 79,949,248,913.38/280,372.07
  6. Step 6: Final answer
    x = 285,154.11

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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.