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Finding the Fourth Proportional to 518,202.36, 715,120.65 and 300,453.23

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Solution

The fourth proportional to 518,202.36, 715,120.65 and 300,453.23 is: 414,626.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,202.36 : 715,120.65 = 300,453.23 : x
  2. Step 2: Convert to fraction form
    518,202.36/715,120.65 = 300,453.23/x
  3. Step 3: Cross multiply
    518,202.36x = 715,120.65 × 300,453.23
  4. Step 4: Simplify right side
    518,202.36x = 214,860,310,920.00
  5. Step 5: Solve for x
    x = 214,860,310,920.00/518,202.36
  6. Step 6: Final answer
    x = 414,626.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.