Home / 228,971.96-343,013.20-128,826.80

Finding the Fourth Proportional to 228,971.96, 343,013.20 and 128,826.80

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Solution

The fourth proportional to 228,971.96, 343,013.20 and 128,826.80 is: 192,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,971.96 : 343,013.20 = 128,826.80 : x
  2. Step 2: Convert to fraction form
    228,971.96/343,013.20 = 128,826.80/x
  3. Step 3: Cross multiply
    228,971.96x = 343,013.20 × 128,826.80
  4. Step 4: Simplify right side
    228,971.96x = 44,189,292,913.76
  5. Step 5: Solve for x
    x = 44,189,292,913.76/228,971.96
  6. Step 6: Final answer
    x = 192,989.98

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1.5x scale

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.