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Finding the Fourth Proportional to 415,633.35, 623,256.26 and 215,900.11

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Solution

The fourth proportional to 415,633.35, 623,256.26 and 215,900.11 is: 323,749.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,633.35 : 623,256.26 = 215,900.11 : x
  2. Step 2: Convert to fraction form
    415,633.35/623,256.26 = 215,900.11/x
  3. Step 3: Cross multiply
    415,633.35x = 623,256.26 × 215,900.11
  4. Step 4: Simplify right side
    415,633.35x = 134,561,095,092.19
  5. Step 5: Solve for x
    x = 134,561,095,092.19/415,633.35
  6. Step 6: Final answer
    x = 323,749.52

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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.