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Finding the Fourth Proportional to 423,617.16, 635,571.54 and 265,660.68

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Solution

The fourth proportional to 423,617.16, 635,571.54 and 265,660.68 is: 398,582.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,617.16 : 635,571.54 = 265,660.68 : x
  2. Step 2: Convert to fraction form
    423,617.16/635,571.54 = 265,660.68/x
  3. Step 3: Cross multiply
    423,617.16x = 635,571.54 × 265,660.68
  4. Step 4: Simplify right side
    423,617.16x = 168,846,367,505.05
  5. Step 5: Solve for x
    x = 168,846,367,505.05/423,617.16
  6. Step 6: Final answer
    x = 398,582.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.