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Finding the Fourth Proportional to 355,443.66, 490,477.54 and 202,469.84

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Solution

The fourth proportional to 355,443.66, 490,477.54 and 202,469.84 is: 279,388.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,443.66 : 490,477.54 = 202,469.84 : x
  2. Step 2: Convert to fraction form
    355,443.66/490,477.54 = 202,469.84/x
  3. Step 3: Cross multiply
    355,443.66x = 490,477.54 × 202,469.84
  4. Step 4: Simplify right side
    355,443.66x = 99,306,909,047.39
  5. Step 5: Solve for x
    x = 99,306,909,047.39/355,443.66
  6. Step 6: Final answer
    x = 279,388.61

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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.