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Finding the Fourth Proportional to 355,362.84, 490,432.30 and 202,367.60

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Solution

The fourth proportional to 355,362.84, 490,432.30 and 202,367.60 is: 279,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,362.84 : 490,432.30 = 202,367.60 : x
  2. Step 2: Convert to fraction form
    355,362.84/490,432.30 = 202,367.60/x
  3. Step 3: Cross multiply
    355,362.84x = 490,432.30 × 202,367.60
  4. Step 4: Simplify right side
    355,362.84x = 99,247,607,513.48
  5. Step 5: Solve for x
    x = 99,247,607,513.48/355,362.84
  6. Step 6: Final answer
    x = 279,285.27

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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.