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Finding the Fourth Proportional to 493,979.52, 740,891.70 and 156,975.78

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Solution

The fourth proportional to 493,979.52, 740,891.70 and 156,975.78 is: 235,439.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,979.52 : 740,891.70 = 156,975.78 : x
  2. Step 2: Convert to fraction form
    493,979.52/740,891.70 = 156,975.78/x
  3. Step 3: Cross multiply
    493,979.52x = 740,891.70 × 156,975.78
  4. Step 4: Simplify right side
    493,979.52x = 116,302,052,503.03
  5. Step 5: Solve for x
    x = 116,302,052,503.03/493,979.52
  6. Step 6: Final answer
    x = 235,439.02

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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.