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Finding the Fourth Proportional to 415,321,343.40, 622,982,015.10 and 172,952,754.60

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Solution

The fourth proportional to 415,321,343.40, 622,982,015.10 and 172,952,754.60 is: 259,429,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,321,343.40 : 622,982,015.10 = 172,952,754.60 : x
  2. Step 2: Convert to fraction form
    415,321,343.40/622,982,015.10 = 172,952,754.60/x
  3. Step 3: Cross multiply
    415,321,343.40x = 622,982,015.10 × 172,952,754.60
  4. Step 4: Simplify right side
    415,321,343.40x = 107,746,455,577,803,792
  5. Step 5: Solve for x
    x = 107,746,455,577,803,792/415,321,343.40
  6. Step 6: Final answer
    x = 259,429,131.90

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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.