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Finding the Fourth Proportional to 309,900.44, 427,804.26 and 238,255.40

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Solution

The fourth proportional to 309,900.44, 427,804.26 and 238,255.40 is: 328,901.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,900.44 : 427,804.26 = 238,255.40 : x
  2. Step 2: Convert to fraction form
    309,900.44/427,804.26 = 238,255.40/x
  3. Step 3: Cross multiply
    309,900.44x = 427,804.26 × 238,255.40
  4. Step 4: Simplify right side
    309,900.44x = 101,926,675,088.00
  5. Step 5: Solve for x
    x = 101,926,675,088.00/309,900.44
  6. Step 6: Final answer
    x = 328,901.36

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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.