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Finding the Fourth Proportional to 309,800.10, 427,497.90 and 173,815.68

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Solution

The fourth proportional to 309,800.10, 427,497.90 and 173,815.68 is: 239,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,800.10 : 427,497.90 = 173,815.68 : x
  2. Step 2: Convert to fraction form
    309,800.10/427,497.90 = 173,815.68/x
  3. Step 3: Cross multiply
    309,800.10x = 427,497.90 × 173,815.68
  4. Step 4: Simplify right side
    309,800.10x = 74,305,838,187.07
  5. Step 5: Solve for x
    x = 74,305,838,187.07/309,800.10
  6. Step 6: Final answer
    x = 239,850.92

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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.