Home / 400,786.44-553,085.28-219,498.80

Finding the Fourth Proportional to 400,786.44, 553,085.28 and 219,498.80

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Solution

The fourth proportional to 400,786.44, 553,085.28 and 219,498.80 is: 302,908.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,786.44 : 553,085.28 = 219,498.80 : x
  2. Step 2: Convert to fraction form
    400,786.44/553,085.28 = 219,498.80/x
  3. Step 3: Cross multiply
    400,786.44x = 553,085.28 × 219,498.80
  4. Step 4: Simplify right side
    400,786.44x = 121,401,555,941.37
  5. Step 5: Solve for x
    x = 121,401,555,941.37/400,786.44
  6. Step 6: Final answer
    x = 302,908.34

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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.