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Finding the Fourth Proportional to 355,292.39, 490,331.45 and 202,337.06

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Solution

The fourth proportional to 355,292.39, 490,331.45 and 202,337.06 is: 279,241.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,292.39 : 490,331.45 = 202,337.06 : x
  2. Step 2: Convert to fraction form
    355,292.39/490,331.45 = 202,337.06/x
  3. Step 3: Cross multiply
    355,292.39x = 490,331.45 × 202,337.06
  4. Step 4: Simplify right side
    355,292.39x = 99,212,222,072.72
  5. Step 5: Solve for x
    x = 99,212,222,072.72/355,292.39
  6. Step 6: Final answer
    x = 279,241.05

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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.