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Finding the Fourth Proportional to 309,609.02, 427,265.34 and 173,673.20

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Solution

The fourth proportional to 309,609.02, 427,265.34 and 173,673.20 is: 239,671.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,609.02 : 427,265.34 = 173,673.20 : x
  2. Step 2: Convert to fraction form
    309,609.02/427,265.34 = 173,673.20/x
  3. Step 3: Cross multiply
    309,609.02x = 427,265.34 × 173,673.20
  4. Step 4: Simplify right side
    309,609.02x = 74,204,538,846.89
  5. Step 5: Solve for x
    x = 74,204,538,846.89/309,609.02
  6. Step 6: Final answer
    x = 239,671.76

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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.