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Finding the Fourth Proportional to 294,330.40, 440,329.20 and 255,320.80

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Solution

The fourth proportional to 294,330.40, 440,329.20 and 255,320.80 is: 381,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,330.40 : 440,329.20 = 255,320.80 : x
  2. Step 2: Convert to fraction form
    294,330.40/440,329.20 = 255,320.80/x
  3. Step 3: Cross multiply
    294,330.40x = 440,329.20 × 255,320.80
  4. Step 4: Simplify right side
    294,330.40x = 112,425,203,607.36
  5. Step 5: Solve for x
    x = 112,425,203,607.36/294,330.40
  6. Step 6: Final answer
    x = 381,969.39

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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.