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Finding the Fourth Proportional to 294,056.40, 439,918.20 and 255,046.80

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Solution

The fourth proportional to 294,056.40, 439,918.20 and 255,046.80 is: 381,558.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,056.40 : 439,918.20 = 255,046.80 : x
  2. Step 2: Convert to fraction form
    294,056.40/439,918.20 = 255,046.80/x
  3. Step 3: Cross multiply
    294,056.40x = 439,918.20 × 255,046.80
  4. Step 4: Simplify right side
    294,056.40x = 112,199,729,171.76
  5. Step 5: Solve for x
    x = 112,199,729,171.76/294,056.40
  6. Step 6: Final answer
    x = 381,558.53

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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.