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Finding the Fourth Proportional to 355,353.09, 490,340.03 and 228,200.91

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Solution

The fourth proportional to 355,353.09, 490,340.03 and 228,200.91 is: 314,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,353.09 : 490,340.03 = 228,200.91 : x
  2. Step 2: Convert to fraction form
    355,353.09/490,340.03 = 228,200.91/x
  3. Step 3: Cross multiply
    355,353.09x = 490,340.03 × 228,200.91
  4. Step 4: Simplify right side
    355,353.09x = 111,896,039,914.42
  5. Step 5: Solve for x
    x = 111,896,039,914.42/355,353.09
  6. Step 6: Final answer
    x = 314,886.92

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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.