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Finding the Fourth Proportional to 423,699.96, 635,549.74 and 108,156.77

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Solution

The fourth proportional to 423,699.96, 635,549.74 and 108,156.77 is: 162,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,699.96 : 635,549.74 = 108,156.77 : x
  2. Step 2: Convert to fraction form
    423,699.96/635,549.74 = 108,156.77/x
  3. Step 3: Cross multiply
    423,699.96x = 635,549.74 × 108,156.77
  4. Step 4: Simplify right side
    423,699.96x = 68,739,003,604.60
  5. Step 5: Solve for x
    x = 68,739,003,604.60/423,699.96
  6. Step 6: Final answer
    x = 162,235.10

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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.