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Finding the Fourth Proportional to 333,890.99, 500,829.18 and 81,172.81

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Solution

The fourth proportional to 333,890.99, 500,829.18 and 81,172.81 is: 121,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,890.99 : 500,829.18 = 81,172.81 : x
  2. Step 2: Convert to fraction form
    333,890.99/500,829.18 = 81,172.81/x
  3. Step 3: Cross multiply
    333,890.99x = 500,829.18 × 81,172.81
  4. Step 4: Simplify right side
    333,890.99x = 40,653,711,870.60
  5. Step 5: Solve for x
    x = 40,653,711,870.60/333,890.99
  6. Step 6: Final answer
    x = 121,757.44

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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.