Home / 400,272.45-552,355.38-218,949.09

Finding the Fourth Proportional to 400,272.45, 552,355.38 and 218,949.09

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Solution

The fourth proportional to 400,272.45, 552,355.38 and 218,949.09 is: 302,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,272.45 : 552,355.38 = 218,949.09 : x
  2. Step 2: Convert to fraction form
    400,272.45/552,355.38 = 218,949.09/x
  3. Step 3: Cross multiply
    400,272.45x = 552,355.38 × 218,949.09
  4. Step 4: Simplify right side
    400,272.45x = 120,937,707,807.60
  5. Step 5: Solve for x
    x = 120,937,707,807.60/400,272.45
  6. Step 6: Final answer
    x = 302,138.48

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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.