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Finding the Fourth Proportional to 428,807.88, 591,560.82 and 267,702.66

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Solution

The fourth proportional to 428,807.88, 591,560.82 and 267,702.66 is: 369,308.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,807.88 : 591,560.82 = 267,702.66 : x
  2. Step 2: Convert to fraction form
    428,807.88/591,560.82 = 267,702.66/x
  3. Step 3: Cross multiply
    428,807.88x = 591,560.82 × 267,702.66
  4. Step 4: Simplify right side
    428,807.88x = 158,362,405,065.78
  5. Step 5: Solve for x
    x = 158,362,405,065.78/428,807.88
  6. Step 6: Final answer
    x = 369,308.52

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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.