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Finding the Fourth Proportional to 491,142.81, 736,714.39 and 220,955.34

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Solution

The fourth proportional to 491,142.81, 736,714.39 and 220,955.34 is: 331,433.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,142.81 : 736,714.39 = 220,955.34 : x
  2. Step 2: Convert to fraction form
    491,142.81/736,714.39 = 220,955.34/x
  3. Step 3: Cross multiply
    491,142.81x = 736,714.39 × 220,955.34
  4. Step 4: Simplify right side
    491,142.81x = 162,780,978,525.34
  5. Step 5: Solve for x
    x = 162,780,978,525.34/491,142.81
  6. Step 6: Final answer
    x = 331,433.09

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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.