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Finding the Fourth Proportional to 362,432.28, 543,840.40 and 263,409.78

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Solution

The fourth proportional to 362,432.28, 543,840.40 and 263,409.78 is: 395,254.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,432.28 : 543,840.40 = 263,409.78 : x
  2. Step 2: Convert to fraction form
    362,432.28/543,840.40 = 263,409.78/x
  3. Step 3: Cross multiply
    362,432.28x = 543,840.40 × 263,409.78
  4. Step 4: Simplify right side
    362,432.28x = 143,252,880,119.11
  5. Step 5: Solve for x
    x = 143,252,880,119.11/362,432.28
  6. Step 6: Final answer
    x = 395,254.20

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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.