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Finding the Fourth Proportional to 423,561.67, 635,466.77 and 170,712.34

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Solution

The fourth proportional to 423,561.67, 635,466.77 and 170,712.34 is: 256,118.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,561.67 : 635,466.77 = 170,712.34 : x
  2. Step 2: Convert to fraction form
    423,561.67/635,466.77 = 170,712.34/x
  3. Step 3: Cross multiply
    423,561.67x = 635,466.77 × 170,712.34
  4. Step 4: Simplify right side
    423,561.67x = 108,482,019,298.94
  5. Step 5: Solve for x
    x = 108,482,019,298.94/423,561.67
  6. Step 6: Final answer
    x = 256,118.59

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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.