Home / 228,765.45-343,312.20-128,819.55

Finding the Fourth Proportional to 228,765.45, 343,312.20 and 128,819.55

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Solution

The fourth proportional to 228,765.45, 343,312.20 and 128,819.55 is: 193,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,765.45 : 343,312.20 = 128,819.55 : x
  2. Step 2: Convert to fraction form
    228,765.45/343,312.20 = 128,819.55/x
  3. Step 3: Cross multiply
    228,765.45x = 343,312.20 × 128,819.55
  4. Step 4: Simplify right side
    228,765.45x = 44,225,323,113.51
  5. Step 5: Solve for x
    x = 44,225,323,113.51/228,765.45
  6. Step 6: Final answer
    x = 193,321.69

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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.