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Finding the Fourth Proportional to 362,438.80, 543,139.80 and 266,923.60

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Solution

The fourth proportional to 362,438.80, 543,139.80 and 266,923.60 is: 400,003.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,438.80 : 543,139.80 = 266,923.60 : x
  2. Step 2: Convert to fraction form
    362,438.80/543,139.80 = 266,923.60/x
  3. Step 3: Cross multiply
    362,438.80x = 543,139.80 × 266,923.60
  4. Step 4: Simplify right side
    362,438.80x = 144,976,830,719.28
  5. Step 5: Solve for x
    x = 144,976,830,719.28/362,438.80
  6. Step 6: Final answer
    x = 400,003.62

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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.