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Finding the Fourth Proportional to 309,523.64, 427,168.56 and 173,555.48

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Solution

The fourth proportional to 309,523.64, 427,168.56 and 173,555.48 is: 239,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,523.64 : 427,168.56 = 173,555.48 : x
  2. Step 2: Convert to fraction form
    309,523.64/427,168.56 = 173,555.48/x
  3. Step 3: Cross multiply
    309,523.64x = 427,168.56 × 173,555.48
  4. Step 4: Simplify right side
    309,523.64x = 74,137,444,471.71
  5. Step 5: Solve for x
    x = 74,137,444,471.71/309,523.64
  6. Step 6: Final answer
    x = 239,521.11

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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.