Home / 513,284-769,913.04-139,297.28

Finding the Fourth Proportional to 513,284, 769,913.04 and 139,297.28

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Solution

The fourth proportional to 513,284, 769,913.04 and 139,297.28 is: 208,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,284 : 769,913.04 = 139,297.28 : x
  2. Step 2: Convert to fraction form
    513,284/769,913.04 = 139,297.28/x
  3. Step 3: Cross multiply
    513,284x = 769,913.04 × 139,297.28
  4. Step 4: Simplify right side
    513,284x = 107,246,792,308.53
  5. Step 5: Solve for x
    x = 107,246,792,308.53/513,284
  6. Step 6: Final answer
    x = 208,942.40

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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.