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Finding the Fourth Proportional to 190,942.80, 266,970 and 190,942.80

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Solution

The fourth proportional to 190,942.80, 266,970 and 190,942.80 is: 266,970

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,942.80 : 266,970 = 190,942.80 : x
  2. Step 2: Convert to fraction form
    190,942.80/266,970 = 190,942.80/x
  3. Step 3: Cross multiply
    190,942.80x = 266,970 × 190,942.80
  4. Step 4: Simplify right side
    190,942.80x = 50,975,999,316
  5. Step 5: Solve for x
    x = 50,975,999,316/190,942.80
  6. Step 6: Final answer
    x = 266,970

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.