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Finding the Fourth Proportional to 401,894.55, 554,620.23 and 220,603.19

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Solution

The fourth proportional to 401,894.55, 554,620.23 and 220,603.19 is: 304,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,894.55 : 554,620.23 = 220,603.19 : x
  2. Step 2: Convert to fraction form
    401,894.55/554,620.23 = 220,603.19/x
  3. Step 3: Cross multiply
    401,894.55x = 554,620.23 × 220,603.19
  4. Step 4: Simplify right side
    401,894.55x = 122,350,989,203.43
  5. Step 5: Solve for x
    x = 122,350,989,203.43/401,894.55
  6. Step 6: Final answer
    x = 304,435.55

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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.