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Finding the Fourth Proportional to 521,300.62, 719,181.02 and 317,187.92

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Solution

The fourth proportional to 521,300.62, 719,181.02 and 317,187.92 is: 437,589.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,300.62 : 719,181.02 = 317,187.92 : x
  2. Step 2: Convert to fraction form
    521,300.62/719,181.02 = 317,187.92/x
  3. Step 3: Cross multiply
    521,300.62x = 719,181.02 × 317,187.92
  4. Step 4: Simplify right side
    521,300.62x = 228,115,531,837.28
  5. Step 5: Solve for x
    x = 228,115,531,837.28/521,300.62
  6. Step 6: Final answer
    x = 437,589.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.