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Finding the Fourth Proportional to 492,380.48, 738,308.28 and 255,484.64

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Solution

The fourth proportional to 492,380.48, 738,308.28 and 255,484.64 is: 383,090.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,380.48 : 738,308.28 = 255,484.64 : x
  2. Step 2: Convert to fraction form
    492,380.48/738,308.28 = 255,484.64/x
  3. Step 3: Cross multiply
    492,380.48x = 738,308.28 × 255,484.64
  4. Step 4: Simplify right side
    492,380.48x = 188,626,425,124.82
  5. Step 5: Solve for x
    x = 188,626,425,124.82/492,380.48
  6. Step 6: Final answer
    x = 383,090.79

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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.