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Finding the Fourth Proportional to 415,196.40, 622,276.20 and 304,258.80

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Solution

The fourth proportional to 415,196.40, 622,276.20 and 304,258.80 is: 456,008.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,196.40 : 622,276.20 = 304,258.80 : x
  2. Step 2: Convert to fraction form
    415,196.40/622,276.20 = 304,258.80/x
  3. Step 3: Cross multiply
    415,196.40x = 622,276.20 × 304,258.80
  4. Step 4: Simplify right side
    415,196.40x = 189,333,009,880.56
  5. Step 5: Solve for x
    x = 189,333,009,880.56/415,196.40
  6. Step 6: Final answer
    x = 456,008.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.