Home / 228,768.45-343,316.70-128,822.55

Finding the Fourth Proportional to 228,768.45, 343,316.70 and 128,822.55

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Solution

The fourth proportional to 228,768.45, 343,316.70 and 128,822.55 is: 193,326.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,768.45 : 343,316.70 = 128,822.55 : x
  2. Step 2: Convert to fraction form
    228,768.45/343,316.70 = 128,822.55/x
  3. Step 3: Cross multiply
    228,768.45x = 343,316.70 × 128,822.55
  4. Step 4: Simplify right side
    228,768.45x = 44,226,932,751.59
  5. Step 5: Solve for x
    x = 44,226,932,751.59/228,768.45
  6. Step 6: Final answer
    x = 193,326.19

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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.