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Finding the Fourth Proportional to 493,639.20, 740,458.80 and 119,662.20

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Solution

The fourth proportional to 493,639.20, 740,458.80 and 119,662.20 is: 179,493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,639.20 : 740,458.80 = 119,662.20 : x
  2. Step 2: Convert to fraction form
    493,639.20/740,458.80 = 119,662.20/x
  3. Step 3: Cross multiply
    493,639.20x = 740,458.80 × 119,662.20
  4. Step 4: Simplify right side
    493,639.20x = 88,604,929,017.36
  5. Step 5: Solve for x
    x = 88,604,929,017.36/493,639.20
  6. Step 6: Final answer
    x = 179,493.30

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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.