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Finding the Fourth Proportional to 320,199.90, 479,608.65 and 264,903.90

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Solution

The fourth proportional to 320,199.90, 479,608.65 and 264,903.90 is: 396,784.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,199.90 : 479,608.65 = 264,903.90 : x
  2. Step 2: Convert to fraction form
    320,199.90/479,608.65 = 264,903.90/x
  3. Step 3: Cross multiply
    320,199.90x = 479,608.65 × 264,903.90
  4. Step 4: Simplify right side
    320,199.90x = 127,050,201,858.74
  5. Step 5: Solve for x
    x = 127,050,201,858.74/320,199.90
  6. Step 6: Final answer
    x = 396,784.01

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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.