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Finding the Fourth Proportional to 354,445.98, 488,859 and 227,133.42

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Solution

The fourth proportional to 354,445.98, 488,859 and 227,133.42 is: 313,266.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,445.98 : 488,859 = 227,133.42 : x
  2. Step 2: Convert to fraction form
    354,445.98/488,859 = 227,133.42/x
  3. Step 3: Cross multiply
    354,445.98x = 488,859 × 227,133.42
  4. Step 4: Simplify right side
    354,445.98x = 111,036,216,567.78
  5. Step 5: Solve for x
    x = 111,036,216,567.78/354,445.98
  6. Step 6: Final answer
    x = 313,266.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.