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Finding the Fourth Proportional to 428,252.45, 590,980.50 and 253,940.00

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Solution

The fourth proportional to 428,252.45, 590,980.50 and 253,940.00 is: 350,432.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,252.45 : 590,980.50 = 253,940.00 : x
  2. Step 2: Convert to fraction form
    428,252.45/590,980.50 = 253,940.00/x
  3. Step 3: Cross multiply
    428,252.45x = 590,980.50 × 253,940.00
  4. Step 4: Simplify right side
    428,252.45x = 150,073,585,215.10
  5. Step 5: Solve for x
    x = 150,073,585,215.10/428,252.45
  6. Step 6: Final answer
    x = 350,432.52

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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.