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Finding the Fourth Proportional to 428,828.44, 591,396 and 267,698.40

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Solution

The fourth proportional to 428,828.44, 591,396 and 267,698.40 is: 369,182.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,828.44 : 591,396 = 267,698.40 : x
  2. Step 2: Convert to fraction form
    428,828.44/591,396 = 267,698.40/x
  3. Step 3: Cross multiply
    428,828.44x = 591,396 × 267,698.40
  4. Step 4: Simplify right side
    428,828.44x = 158,315,762,966.40
  5. Step 5: Solve for x
    x = 158,315,762,966.40/428,828.44
  6. Step 6: Final answer
    x = 369,182.05

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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.