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Finding the Fourth Proportional to 485,005.39, 669,308.11 and 264,241.58

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Solution

The fourth proportional to 485,005.39, 669,308.11 and 264,241.58 is: 364,653.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,005.39 : 669,308.11 = 264,241.58 : x
  2. Step 2: Convert to fraction form
    485,005.39/669,308.11 = 264,241.58/x
  3. Step 3: Cross multiply
    485,005.39x = 669,308.11 × 264,241.58
  4. Step 4: Simplify right side
    485,005.39x = 176,859,035,972.67
  5. Step 5: Solve for x
    x = 176,859,035,972.67/485,005.39
  6. Step 6: Final answer
    x = 364,653.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.