Home / 228,731.28-343,012.68-78,933.36

Finding the Fourth Proportional to 228,731.28, 343,012.68 and 78,933.36

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Solution

The fourth proportional to 228,731.28, 343,012.68 and 78,933.36 is: 118,370.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,731.28 : 343,012.68 = 78,933.36 : x
  2. Step 2: Convert to fraction form
    228,731.28/343,012.68 = 78,933.36/x
  3. Step 3: Cross multiply
    228,731.28x = 343,012.68 × 78,933.36
  4. Step 4: Simplify right side
    228,731.28x = 27,075,143,355.00
  5. Step 5: Solve for x
    x = 27,075,143,355.00/228,731.28
  6. Step 6: Final answer
    x = 118,370.97

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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.