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Finding the Fourth Proportional to 437,998.40, 656,997.60 and 105,574.40

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Solution

The fourth proportional to 437,998.40, 656,997.60 and 105,574.40 is: 158,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,998.40 : 656,997.60 = 105,574.40 : x
  2. Step 2: Convert to fraction form
    437,998.40/656,997.60 = 105,574.40/x
  3. Step 3: Cross multiply
    437,998.40x = 656,997.60 × 105,574.40
  4. Step 4: Simplify right side
    437,998.40x = 69,362,127,421.44
  5. Step 5: Solve for x
    x = 69,362,127,421.44/437,998.40
  6. Step 6: Final answer
    x = 158,361.60

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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.