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Finding the Fourth Proportional to 401,477.85, 554,037.84 and 220,185

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Solution

The fourth proportional to 401,477.85, 554,037.84 and 220,185 is: 303,854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,477.85 : 554,037.84 = 220,185 : x
  2. Step 2: Convert to fraction form
    401,477.85/554,037.84 = 220,185/x
  3. Step 3: Cross multiply
    401,477.85x = 554,037.84 × 220,185
  4. Step 4: Simplify right side
    401,477.85x = 121,990,821,800.40
  5. Step 5: Solve for x
    x = 121,990,821,800.40/401,477.85
  6. Step 6: Final answer
    x = 303,854.43

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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.