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Finding the Fourth Proportional to 320,203.40, 479,613.90 and 264,907.40

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Solution

The fourth proportional to 320,203.40, 479,613.90 and 264,907.40 is: 396,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,203.40 : 479,613.90 = 264,907.40 : x
  2. Step 2: Convert to fraction form
    320,203.40/479,613.90 = 264,907.40/x
  3. Step 3: Cross multiply
    320,203.40x = 479,613.90 × 264,907.40
  4. Step 4: Simplify right side
    320,203.40x = 127,053,271,252.86
  5. Step 5: Solve for x
    x = 127,053,271,252.86/320,203.40
  6. Step 6: Final answer
    x = 396,789.26

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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.