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Finding the Fourth Proportional to 293,673, 405,234.36 and 172,787.70

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Solution

The fourth proportional to 293,673, 405,234.36 and 172,787.70 is: 238,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,673 : 405,234.36 = 172,787.70 : x
  2. Step 2: Convert to fraction form
    293,673/405,234.36 = 172,787.70/x
  3. Step 3: Cross multiply
    293,673x = 405,234.36 × 172,787.70
  4. Step 4: Simplify right side
    293,673x = 70,019,513,025.37
  5. Step 5: Solve for x
    x = 70,019,513,025.37/293,673
  6. Step 6: Final answer
    x = 238,426.80

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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.