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Finding the Fourth Proportional to 520,059.60, 780,175.80 and 204,526.80

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Solution

The fourth proportional to 520,059.60, 780,175.80 and 204,526.80 is: 306,824.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,059.60 : 780,175.80 = 204,526.80 : x
  2. Step 2: Convert to fraction form
    520,059.60/780,175.80 = 204,526.80/x
  3. Step 3: Cross multiply
    520,059.60x = 780,175.80 × 204,526.80
  4. Step 4: Simplify right side
    520,059.60x = 159,566,859,811.44
  5. Step 5: Solve for x
    x = 159,566,859,811.44/520,059.60
  6. Step 6: Final answer
    x = 306,824.18

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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.