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Finding the Fourth Proportional to 355,276.66, 490,281.65 and 196,300.66

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Solution

The fourth proportional to 355,276.66, 490,281.65 and 196,300.66 is: 270,894.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,276.66 : 490,281.65 = 196,300.66 : x
  2. Step 2: Convert to fraction form
    355,276.66/490,281.65 = 196,300.66/x
  3. Step 3: Cross multiply
    355,276.66x = 490,281.65 × 196,300.66
  4. Step 4: Simplify right side
    355,276.66x = 96,242,611,480.89
  5. Step 5: Solve for x
    x = 96,242,611,480.89/355,276.66
  6. Step 6: Final answer
    x = 270,894.83

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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.