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Finding the Fourth Proportional to 401,735.49, 554,393.43 and 220,450.45

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Solution

The fourth proportional to 401,735.49, 554,393.43 and 220,450.45 is: 304,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,735.49 : 554,393.43 = 220,450.45 : x
  2. Step 2: Convert to fraction form
    401,735.49/554,393.43 = 220,450.45/x
  3. Step 3: Cross multiply
    401,735.49x = 554,393.43 × 220,450.45
  4. Step 4: Simplify right side
    401,735.49x = 122,216,281,120.54
  5. Step 5: Solve for x
    x = 122,216,281,120.54/401,735.49
  6. Step 6: Final answer
    x = 304,220.77

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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.