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Finding the Fourth Proportional to 438,165.35, 657,451.46 and 168,203.66

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Solution

The fourth proportional to 438,165.35, 657,451.46 and 168,203.66 is: 252,383.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,165.35 : 657,451.46 = 168,203.66 : x
  2. Step 2: Convert to fraction form
    438,165.35/657,451.46 = 168,203.66/x
  3. Step 3: Cross multiply
    438,165.35x = 657,451.46 × 168,203.66
  4. Step 4: Simplify right side
    438,165.35x = 110,585,744,051.77
  5. Step 5: Solve for x
    x = 110,585,744,051.77/438,165.35
  6. Step 6: Final answer
    x = 252,383.59

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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.