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Finding the Fourth Proportional to 358,356.12, 494,428.86 and 231,104.76

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Solution

The fourth proportional to 358,356.12, 494,428.86 and 231,104.76 is: 318,858.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,356.12 : 494,428.86 = 231,104.76 : x
  2. Step 2: Convert to fraction form
    358,356.12/494,428.86 = 231,104.76/x
  3. Step 3: Cross multiply
    358,356.12x = 494,428.86 × 231,104.76
  4. Step 4: Simplify right side
    358,356.12x = 114,264,863,027.37
  5. Step 5: Solve for x
    x = 114,264,863,027.37/358,356.12
  6. Step 6: Final answer
    x = 318,858.41

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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.