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Finding the Fourth Proportional to 266,771.68, 368,139.76 and 145,912.64

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Solution

The fourth proportional to 266,771.68, 368,139.76 and 145,912.64 is: 201,356.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,771.68 : 368,139.76 = 145,912.64 : x
  2. Step 2: Convert to fraction form
    266,771.68/368,139.76 = 145,912.64/x
  3. Step 3: Cross multiply
    266,771.68x = 368,139.76 × 145,912.64
  4. Step 4: Simplify right side
    266,771.68x = 53,716,244,270.57
  5. Step 5: Solve for x
    x = 53,716,244,270.57/266,771.68
  6. Step 6: Final answer
    x = 201,356.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.