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Finding the Fourth Proportional to 294,328.40, 440,326.20 and 255,318.80

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Solution

The fourth proportional to 294,328.40, 440,326.20 and 255,318.80 is: 381,966.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,328.40 : 440,326.20 = 255,318.80 : x
  2. Step 2: Convert to fraction form
    294,328.40/440,326.20 = 255,318.80/x
  3. Step 3: Cross multiply
    294,328.40x = 440,326.20 × 255,318.80
  4. Step 4: Simplify right side
    294,328.40x = 112,423,556,992.56
  5. Step 5: Solve for x
    x = 112,423,556,992.56/294,328.40
  6. Step 6: Final answer
    x = 381,966.39

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1.5x scale

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.