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Finding the Fourth Proportional to 439,349.08, 659,027.13 and 287,674.02

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Solution

The fourth proportional to 439,349.08, 659,027.13 and 287,674.02 is: 431,513.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,349.08 : 659,027.13 = 287,674.02 : x
  2. Step 2: Convert to fraction form
    439,349.08/659,027.13 = 287,674.02/x
  3. Step 3: Cross multiply
    439,349.08x = 659,027.13 × 287,674.02
  4. Step 4: Simplify right side
    439,349.08x = 189,584,983,776.16
  5. Step 5: Solve for x
    x = 189,584,983,776.16/439,349.08
  6. Step 6: Final answer
    x = 431,513.33

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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.