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Finding the Fourth Proportional to 493,453.80, 740,007.90 and 256,717.80

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Solution

The fourth proportional to 493,453.80, 740,007.90 and 256,717.80 is: 384,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,453.80 : 740,007.90 = 256,717.80 : x
  2. Step 2: Convert to fraction form
    493,453.80/740,007.90 = 256,717.80/x
  3. Step 3: Cross multiply
    493,453.80x = 740,007.90 × 256,717.80
  4. Step 4: Simplify right side
    493,453.80x = 189,973,200,070.62
  5. Step 5: Solve for x
    x = 189,973,200,070.62/493,453.80
  6. Step 6: Final answer
    x = 384,986.80

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1.5x scale

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.