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Finding the Fourth Proportional to 339,619.60, 508,219.80 and 295,728.40

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Solution

The fourth proportional to 339,619.60, 508,219.80 and 295,728.40 is: 442,539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,619.60 : 508,219.80 = 295,728.40 : x
  2. Step 2: Convert to fraction form
    339,619.60/508,219.80 = 295,728.40/x
  3. Step 3: Cross multiply
    339,619.60x = 508,219.80 × 295,728.40
  4. Step 4: Simplify right side
    339,619.60x = 150,295,028,302.32
  5. Step 5: Solve for x
    x = 150,295,028,302.32/339,619.60
  6. Step 6: Final answer
    x = 442,539.32

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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.