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Finding the Fourth Proportional to 354,662.40, 531,993.60 and 105,344.40

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Solution

The fourth proportional to 354,662.40, 531,993.60 and 105,344.40 is: 158,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,662.40 : 531,993.60 = 105,344.40 : x
  2. Step 2: Convert to fraction form
    354,662.40/531,993.60 = 105,344.40/x
  3. Step 3: Cross multiply
    354,662.40x = 531,993.60 × 105,344.40
  4. Step 4: Simplify right side
    354,662.40x = 56,042,546,595.84
  5. Step 5: Solve for x
    x = 56,042,546,595.84/354,662.40
  6. Step 6: Final answer
    x = 158,016.60

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1.5x scale

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.