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Finding the Fourth Proportional to 209,538.94, 314,337.88 and 67,336.60

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Solution

The fourth proportional to 209,538.94, 314,337.88 and 67,336.60 is: 101,014.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,538.94 : 314,337.88 = 67,336.60 : x
  2. Step 2: Convert to fraction form
    209,538.94/314,337.88 = 67,336.60/x
  3. Step 3: Cross multiply
    209,538.94x = 314,337.88 × 67,336.60
  4. Step 4: Simplify right side
    209,538.94x = 21,166,444,090.41
  5. Step 5: Solve for x
    x = 21,166,444,090.41/209,538.94
  6. Step 6: Final answer
    x = 101,014.37

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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.