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Finding the Fourth Proportional to 497,742.40, 746,786.40 and 217,345.60

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Solution

The fourth proportional to 497,742.40, 746,786.40 and 217,345.60 is: 326,093.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,742.40 : 746,786.40 = 217,345.60 : x
  2. Step 2: Convert to fraction form
    497,742.40/746,786.40 = 217,345.60/x
  3. Step 3: Cross multiply
    497,742.40x = 746,786.40 × 217,345.60
  4. Step 4: Simplify right side
    497,742.40x = 162,310,738,179.84
  5. Step 5: Solve for x
    x = 162,310,738,179.84/497,742.40
  6. Step 6: Final answer
    x = 326,093.86

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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.