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Finding the Fourth Proportional to 401,570.81, 554,183.06 and 220,290.38

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Solution

The fourth proportional to 401,570.81, 554,183.06 and 220,290.38 is: 304,009.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,570.81 : 554,183.06 = 220,290.38 : x
  2. Step 2: Convert to fraction form
    401,570.81/554,183.06 = 220,290.38/x
  3. Step 3: Cross multiply
    401,570.81x = 554,183.06 × 220,290.38
  4. Step 4: Simplify right side
    401,570.81x = 122,081,193,004.60
  5. Step 5: Solve for x
    x = 122,081,193,004.60/401,570.81
  6. Step 6: Final answer
    x = 304,009.13

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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.