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Finding the Fourth Proportional to 401,271.81, 553,790.04 and 220,018.32

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Solution

The fourth proportional to 401,271.81, 553,790.04 and 220,018.32 is: 303,644.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,271.81 : 553,790.04 = 220,018.32 : x
  2. Step 2: Convert to fraction form
    401,271.81/553,790.04 = 220,018.32/x
  3. Step 3: Cross multiply
    401,271.81x = 553,790.04 × 220,018.32
  4. Step 4: Simplify right side
    401,271.81x = 121,843,954,233.53
  5. Step 5: Solve for x
    x = 121,843,954,233.53/401,271.81
  6. Step 6: Final answer
    x = 303,644.44

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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.