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Finding the Fourth Proportional to 238,129.08, 356,945.22 and 80,303.28

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Solution

The fourth proportional to 238,129.08, 356,945.22 and 80,303.28 is: 120,371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,129.08 : 356,945.22 = 80,303.28 : x
  2. Step 2: Convert to fraction form
    238,129.08/356,945.22 = 80,303.28/x
  3. Step 3: Cross multiply
    238,129.08x = 356,945.22 × 80,303.28
  4. Step 4: Simplify right side
    238,129.08x = 28,663,871,946.32
  5. Step 5: Solve for x
    x = 28,663,871,946.32/238,129.08
  6. Step 6: Final answer
    x = 120,371.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.