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Finding the Fourth Proportional to 353,369.76, 487,542.33 and 200,400.05

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Solution

The fourth proportional to 353,369.76, 487,542.33 and 200,400.05 is: 276,490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,369.76 : 487,542.33 = 200,400.05 : x
  2. Step 2: Convert to fraction form
    353,369.76/487,542.33 = 200,400.05/x
  3. Step 3: Cross multiply
    353,369.76x = 487,542.33 × 200,400.05
  4. Step 4: Simplify right side
    353,369.76x = 97,703,504,871.40
  5. Step 5: Solve for x
    x = 97,703,504,871.40/353,369.76
  6. Step 6: Final answer
    x = 276,490.85

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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.