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Finding the Fourth Proportional to 324,458.53, 486,688.91 and 99,817.45

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Solution

The fourth proportional to 324,458.53, 486,688.91 and 99,817.45 is: 149,726.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,458.53 : 486,688.91 = 99,817.45 : x
  2. Step 2: Convert to fraction form
    324,458.53/486,688.91 = 99,817.45/x
  3. Step 3: Cross multiply
    324,458.53x = 486,688.91 × 99,817.45
  4. Step 4: Simplify right side
    324,458.53x = 48,580,044,223.67
  5. Step 5: Solve for x
    x = 48,580,044,223.67/324,458.53
  6. Step 6: Final answer
    x = 149,726.51

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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.