Home / 400,911.12-553,255.72-219,622.79

Finding the Fourth Proportional to 400,911.12, 553,255.72 and 219,622.79

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Solution

The fourth proportional to 400,911.12, 553,255.72 and 219,622.79 is: 303,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,911.12 : 553,255.72 = 219,622.79 : x
  2. Step 2: Convert to fraction form
    400,911.12/553,255.72 = 219,622.79/x
  3. Step 3: Cross multiply
    400,911.12x = 553,255.72 × 219,622.79
  4. Step 4: Simplify right side
    400,911.12x = 121,507,565,643.94
  5. Step 5: Solve for x
    x = 121,507,565,643.94/400,911.12
  6. Step 6: Final answer
    x = 303,078.56

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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.