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Finding the Fourth Proportional to 520,063.24, 779,940.30 and 220,539.40

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Solution

The fourth proportional to 520,063.24, 779,940.30 and 220,539.40 is: 330,743.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,063.24 : 779,940.30 = 220,539.40 : x
  2. Step 2: Convert to fraction form
    520,063.24/779,940.30 = 220,539.40/x
  3. Step 3: Cross multiply
    520,063.24x = 779,940.30 × 220,539.40
  4. Step 4: Simplify right side
    520,063.24x = 172,007,565,797.82
  5. Step 5: Solve for x
    x = 172,007,565,797.82/520,063.24
  6. Step 6: Final answer
    x = 330,743.56

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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.