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Finding the Fourth Proportional to 309,325.36, 426,904.42 and 173,396.02

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Solution

The fourth proportional to 309,325.36, 426,904.42 and 173,396.02 is: 239,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,325.36 : 426,904.42 = 173,396.02 : x
  2. Step 2: Convert to fraction form
    309,325.36/426,904.42 = 173,396.02/x
  3. Step 3: Cross multiply
    309,325.36x = 426,904.42 × 173,396.02
  4. Step 4: Simplify right side
    309,325.36x = 74,023,527,348.41
  5. Step 5: Solve for x
    x = 74,023,527,348.41/309,325.36
  6. Step 6: Final answer
    x = 239,306.36

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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.