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Finding the Fourth Proportional to 479,274.60, 719,013.96 and 142,316.22

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Solution

The fourth proportional to 479,274.60, 719,013.96 and 142,316.22 is: 213,504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,274.60 : 719,013.96 = 142,316.22 : x
  2. Step 2: Convert to fraction form
    479,274.60/719,013.96 = 142,316.22/x
  3. Step 3: Cross multiply
    479,274.60x = 719,013.96 × 142,316.22
  4. Step 4: Simplify right side
    479,274.60x = 102,327,348,914.43
  5. Step 5: Solve for x
    x = 102,327,348,914.43/479,274.60
  6. Step 6: Final answer
    x = 213,504.64

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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.