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Finding the Fourth Proportional to 397,037.99, 547,690.65 and 243,969.86

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Solution

The fourth proportional to 397,037.99, 547,690.65 and 243,969.86 is: 336,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,037.99 : 547,690.65 = 243,969.86 : x
  2. Step 2: Convert to fraction form
    397,037.99/547,690.65 = 243,969.86/x
  3. Step 3: Cross multiply
    397,037.99x = 547,690.65 × 243,969.86
  4. Step 4: Simplify right side
    397,037.99x = 133,620,008,465.36
  5. Step 5: Solve for x
    x = 133,620,008,465.36/397,037.99
  6. Step 6: Final answer
    x = 336,542.13

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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.