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Finding the Fourth Proportional to 358,353.12, 494,424.72 and 231,101.76

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Solution

The fourth proportional to 358,353.12, 494,424.72 and 231,101.76 is: 318,854.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,353.12 : 494,424.72 = 231,101.76 : x
  2. Step 2: Convert to fraction form
    358,353.12/494,424.72 = 231,101.76/x
  3. Step 3: Cross multiply
    358,353.12x = 494,424.72 × 231,101.76
  4. Step 4: Simplify right side
    358,353.12x = 114,262,422,979.51
  5. Step 5: Solve for x
    x = 114,262,422,979.51/358,353.12
  6. Step 6: Final answer
    x = 318,854.27

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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.