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Finding the Fourth Proportional to 426,892.54, 589,145.22 and 243,138.91

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Solution

The fourth proportional to 426,892.54, 589,145.22 and 243,138.91 is: 335,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,892.54 : 589,145.22 = 243,138.91 : x
  2. Step 2: Convert to fraction form
    426,892.54/589,145.22 = 243,138.91/x
  3. Step 3: Cross multiply
    426,892.54x = 589,145.22 × 243,138.91
  4. Step 4: Simplify right side
    426,892.54x = 143,244,125,406.82
  5. Step 5: Solve for x
    x = 143,244,125,406.82/426,892.54
  6. Step 6: Final answer
    x = 335,550.78

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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.