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Finding the Fourth Proportional to 355,414.10, 490,800.67 and 228,312.95

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Solution

The fourth proportional to 355,414.10, 490,800.67 and 228,312.95 is: 315,283.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,414.10 : 490,800.67 = 228,312.95 : x
  2. Step 2: Convert to fraction form
    355,414.10/490,800.67 = 228,312.95/x
  3. Step 3: Cross multiply
    355,414.10x = 490,800.67 × 228,312.95
  4. Step 4: Simplify right side
    355,414.10x = 112,056,145,804.89
  5. Step 5: Solve for x
    x = 112,056,145,804.89/355,414.10
  6. Step 6: Final answer
    x = 315,283.35

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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.