Home / 266,693-368,021.22-145,811.72

Finding the Fourth Proportional to 266,693, 368,021.22 and 145,811.72

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Solution

The fourth proportional to 266,693, 368,021.22 and 145,811.72 is: 201,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,693 : 368,021.22 = 145,811.72 : x
  2. Step 2: Convert to fraction form
    266,693/368,021.22 = 145,811.72/x
  3. Step 3: Cross multiply
    266,693x = 368,021.22 × 145,811.72
  4. Step 4: Simplify right side
    266,693x = 53,661,807,084.70
  5. Step 5: Solve for x
    x = 53,661,807,084.70/266,693
  6. Step 6: Final answer
    x = 201,211.91

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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.