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Finding the Fourth Proportional to 309,782.07, 427,473.05 and 173,797.65

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Solution

The fourth proportional to 309,782.07, 427,473.05 and 173,797.65 is: 239,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,782.07 : 427,473.05 = 173,797.65 : x
  2. Step 2: Convert to fraction form
    309,782.07/427,473.05 = 173,797.65/x
  3. Step 3: Cross multiply
    309,782.07x = 427,473.05 × 173,797.65
  4. Step 4: Simplify right side
    309,782.07x = 74,293,810,659.34
  5. Step 5: Solve for x
    x = 74,293,810,659.34/309,782.07
  6. Step 6: Final answer
    x = 239,826.05

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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.