Home / 355,688.20-490,915.38-228,522.76

Finding the Fourth Proportional to 355,688.20, 490,915.38 and 228,522.76

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Solution

The fourth proportional to 355,688.20, 490,915.38 and 228,522.76 is: 315,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,688.20 : 490,915.38 = 228,522.76 : x
  2. Step 2: Convert to fraction form
    355,688.20/490,915.38 = 228,522.76/x
  3. Step 3: Cross multiply
    355,688.20x = 490,915.38 × 228,522.76
  4. Step 4: Simplify right side
    355,688.20x = 112,185,337,564.05
  5. Step 5: Solve for x
    x = 112,185,337,564.05/355,688.20
  6. Step 6: Final answer
    x = 315,403.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.