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Finding the Fourth Proportional to 309,233.40, 426,735.90 and 173,265.72

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Solution

The fourth proportional to 309,233.40, 426,735.90 and 173,265.72 is: 239,103.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,233.40 : 426,735.90 = 173,265.72 : x
  2. Step 2: Convert to fraction form
    309,233.40/426,735.90 = 173,265.72/x
  3. Step 3: Cross multiply
    309,233.40x = 426,735.90 × 173,265.72
  4. Step 4: Simplify right side
    309,233.40x = 73,938,702,963.35
  5. Step 5: Solve for x
    x = 73,938,702,963.35/309,233.40
  6. Step 6: Final answer
    x = 239,103.22

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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.