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Finding the Fourth Proportional to 401,361.52, 553,885.32 and 220,090

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Solution

The fourth proportional to 401,361.52, 553,885.32 and 220,090 is: 303,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,361.52 : 553,885.32 = 220,090 : x
  2. Step 2: Convert to fraction form
    401,361.52/553,885.32 = 220,090/x
  3. Step 3: Cross multiply
    401,361.52x = 553,885.32 × 220,090
  4. Step 4: Simplify right side
    401,361.52x = 121,904,620,078.80
  5. Step 5: Solve for x
    x = 121,904,620,078.80/401,361.52
  6. Step 6: Final answer
    x = 303,727.72

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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.