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Finding the Fourth Proportional to 209,907.41, 314,771.40 and 79,991.10

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Solution

The fourth proportional to 209,907.41, 314,771.40 and 79,991.10 is: 119,952.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,907.41 : 314,771.40 = 79,991.10 : x
  2. Step 2: Convert to fraction form
    209,907.41/314,771.40 = 79,991.10/x
  3. Step 3: Cross multiply
    209,907.41x = 314,771.40 × 79,991.10
  4. Step 4: Simplify right side
    209,907.41x = 25,178,910,534.54
  5. Step 5: Solve for x
    x = 25,178,910,534.54/209,907.41
  6. Step 6: Final answer
    x = 119,952.46

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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.