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Finding the Fourth Proportional to 309,859.02, 427,580.37 and 173,874.06

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Solution

The fourth proportional to 309,859.02, 427,580.37 and 173,874.06 is: 239,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,859.02 : 427,580.37 = 173,874.06 : x
  2. Step 2: Convert to fraction form
    309,859.02/427,580.37 = 173,874.06/x
  3. Step 3: Cross multiply
    309,859.02x = 427,580.37 × 173,874.06
  4. Step 4: Simplify right side
    309,859.02x = 74,345,134,908.20
  5. Step 5: Solve for x
    x = 74,345,134,908.20/309,859.02
  6. Step 6: Final answer
    x = 239,932.13

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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.