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Finding the Fourth Proportional to 324,428.46, 486,494.34 and 99,710.58

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Solution

The fourth proportional to 324,428.46, 486,494.34 and 99,710.58 is: 149,520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,428.46 : 486,494.34 = 99,710.58 : x
  2. Step 2: Convert to fraction form
    324,428.46/486,494.34 = 99,710.58/x
  3. Step 3: Cross multiply
    324,428.46x = 486,494.34 × 99,710.58
  4. Step 4: Simplify right side
    324,428.46x = 48,508,632,808.12
  5. Step 5: Solve for x
    x = 48,508,632,808.12/324,428.46
  6. Step 6: Final answer
    x = 149,520.28

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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.