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Finding the Fourth Proportional to 499,842.52, 689,780.61 and 270,399.27

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Solution

The fourth proportional to 499,842.52, 689,780.61 and 270,399.27 is: 373,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,842.52 : 689,780.61 = 270,399.27 : x
  2. Step 2: Convert to fraction form
    499,842.52/689,780.61 = 270,399.27/x
  3. Step 3: Cross multiply
    499,842.52x = 689,780.61 × 270,399.27
  4. Step 4: Simplify right side
    499,842.52x = 186,516,173,404.16
  5. Step 5: Solve for x
    x = 186,516,173,404.16/499,842.52
  6. Step 6: Final answer
    x = 373,149.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.