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Finding the Fourth Proportional to 520,063.60, 780,181.80 and 204,530.80

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Solution

The fourth proportional to 520,063.60, 780,181.80 and 204,530.80 is: 306,830.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,063.60 : 780,181.80 = 204,530.80 : x
  2. Step 2: Convert to fraction form
    520,063.60/780,181.80 = 204,530.80/x
  3. Step 3: Cross multiply
    520,063.60x = 780,181.80 × 204,530.80
  4. Step 4: Simplify right side
    520,063.60x = 159,571,207,699.44
  5. Step 5: Solve for x
    x = 159,571,207,699.44/520,063.60
  6. Step 6: Final answer
    x = 306,830.18

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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.