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Finding the Fourth Proportional to 296,682.10, 445,035.44 and 86,320.04

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Solution

The fourth proportional to 296,682.10, 445,035.44 and 86,320.04 is: 129,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,682.10 : 445,035.44 = 86,320.04 : x
  2. Step 2: Convert to fraction form
    296,682.10/445,035.44 = 86,320.04/x
  3. Step 3: Cross multiply
    296,682.10x = 445,035.44 × 86,320.04
  4. Step 4: Simplify right side
    296,682.10x = 38,415,476,982.22
  5. Step 5: Solve for x
    x = 38,415,476,982.22/296,682.10
  6. Step 6: Final answer
    x = 129,483.64

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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.