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Finding the Fourth Proportional to 423,571.69, 635,357.76 and 265,910.86

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Solution

The fourth proportional to 423,571.69, 635,357.76 and 265,910.86 is: 398,866.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,571.69 : 635,357.76 = 265,910.86 : x
  2. Step 2: Convert to fraction form
    423,571.69/635,357.76 = 265,910.86/x
  3. Step 3: Cross multiply
    423,571.69x = 635,357.76 × 265,910.86
  4. Step 4: Simplify right side
    423,571.69x = 168,948,528,369.27
  5. Step 5: Solve for x
    x = 168,948,528,369.27/423,571.69
  6. Step 6: Final answer
    x = 398,866.43

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1.5x scale

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.