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Finding the Fourth Proportional to 355,341.67, 490,395.13 and 200,331.18

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Solution

The fourth proportional to 355,341.67, 490,395.13 and 200,331.18 is: 276,470.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,341.67 : 490,395.13 = 200,331.18 : x
  2. Step 2: Convert to fraction form
    355,341.67/490,395.13 = 200,331.18/x
  3. Step 3: Cross multiply
    355,341.67x = 490,395.13 × 200,331.18
  4. Step 4: Simplify right side
    355,341.67x = 98,241,434,558.33
  5. Step 5: Solve for x
    x = 98,241,434,558.33/355,341.67
  6. Step 6: Final answer
    x = 276,470.35

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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.