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Finding the Fourth Proportional to 333,039.60, 499,559.40 and 108,421.20

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Solution

The fourth proportional to 333,039.60, 499,559.40 and 108,421.20 is: 162,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,039.60 : 499,559.40 = 108,421.20 : x
  2. Step 2: Convert to fraction form
    333,039.60/499,559.40 = 108,421.20/x
  3. Step 3: Cross multiply
    333,039.60x = 499,559.40 × 108,421.20
  4. Step 4: Simplify right side
    333,039.60x = 54,162,829,619.28
  5. Step 5: Solve for x
    x = 54,162,829,619.28/333,039.60
  6. Step 6: Final answer
    x = 162,631.80

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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.