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Finding the Fourth Proportional to 344,555.60, 515,958.60 and 328,809.20

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Solution

The fourth proportional to 344,555.60, 515,958.60 and 328,809.20 is: 492,378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,555.60 : 515,958.60 = 328,809.20 : x
  2. Step 2: Convert to fraction form
    344,555.60/515,958.60 = 328,809.20/x
  3. Step 3: Cross multiply
    344,555.60x = 515,958.60 × 328,809.20
  4. Step 4: Simplify right side
    344,555.60x = 169,651,934,499.12
  5. Step 5: Solve for x
    x = 169,651,934,499.12/344,555.60
  6. Step 6: Final answer
    x = 492,378.98

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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.