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Finding the Fourth Proportional to 294,620.80, 442,084.80 and 128,425.60

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Solution

The fourth proportional to 294,620.80, 442,084.80 and 128,425.60 is: 192,705.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,620.80 : 442,084.80 = 128,425.60 : x
  2. Step 2: Convert to fraction form
    294,620.80/442,084.80 = 128,425.60/x
  3. Step 3: Cross multiply
    294,620.80x = 442,084.80 × 128,425.60
  4. Step 4: Simplify right side
    294,620.80x = 56,775,005,690.88
  5. Step 5: Solve for x
    x = 56,775,005,690.88/294,620.80
  6. Step 6: Final answer
    x = 192,705.35

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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.