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Finding the Fourth Proportional to 401,301.08, 553,780.78 and 220,009.02

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Solution

The fourth proportional to 401,301.08, 553,780.78 and 220,009.02 is: 303,604.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,301.08 : 553,780.78 = 220,009.02 : x
  2. Step 2: Convert to fraction form
    401,301.08/553,780.78 = 220,009.02/x
  3. Step 3: Cross multiply
    401,301.08x = 553,780.78 × 220,009.02
  4. Step 4: Simplify right side
    401,301.08x = 121,836,766,702.64
  5. Step 5: Solve for x
    x = 121,836,766,702.64/401,301.08
  6. Step 6: Final answer
    x = 303,604.38

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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.