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Finding the Fourth Proportional to 499,639.20, 749,458.80 and 125,662.20

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Solution

The fourth proportional to 499,639.20, 749,458.80 and 125,662.20 is: 188,493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,639.20 : 749,458.80 = 125,662.20 : x
  2. Step 2: Convert to fraction form
    499,639.20/749,458.80 = 125,662.20/x
  3. Step 3: Cross multiply
    499,639.20x = 749,458.80 × 125,662.20
  4. Step 4: Simplify right side
    499,639.20x = 94,178,641,617.36
  5. Step 5: Solve for x
    x = 94,178,641,617.36/499,639.20
  6. Step 6: Final answer
    x = 188,493.30

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Similar ratio
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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.