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Finding the Fourth Proportional to 401,385.60, 553,917.60 and 220,094.64

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Solution

The fourth proportional to 401,385.60, 553,917.60 and 220,094.64 is: 303,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,385.60 : 553,917.60 = 220,094.64 : x
  2. Step 2: Convert to fraction form
    401,385.60/553,917.60 = 220,094.64/x
  3. Step 3: Cross multiply
    401,385.60x = 553,917.60 × 220,094.64
  4. Step 4: Simplify right side
    401,385.60x = 121,914,294,761.66
  5. Step 5: Solve for x
    x = 121,914,294,761.66/401,385.60
  6. Step 6: Final answer
    x = 303,733.60

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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.