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Finding the Fourth Proportional to 309,568.14, 427,229.91 and 173,599.92

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Solution

The fourth proportional to 309,568.14, 427,229.91 and 173,599.92 is: 239,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,568.14 : 427,229.91 = 173,599.92 : x
  2. Step 2: Convert to fraction form
    309,568.14/427,229.91 = 173,599.92/x
  3. Step 3: Cross multiply
    309,568.14x = 427,229.91 × 173,599.92
  4. Step 4: Simplify right side
    309,568.14x = 74,167,078,197.61
  5. Step 5: Solve for x
    x = 74,167,078,197.61/309,568.14
  6. Step 6: Final answer
    x = 239,582.40

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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.