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Finding the Fourth Proportional to 433,987.37, 650,478.04 and 256,643.54

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Solution

The fourth proportional to 433,987.37, 650,478.04 and 256,643.54 is: 384,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,987.37 : 650,478.04 = 256,643.54 : x
  2. Step 2: Convert to fraction form
    433,987.37/650,478.04 = 256,643.54/x
  3. Step 3: Cross multiply
    433,987.37x = 650,478.04 × 256,643.54
  4. Step 4: Simplify right side
    433,987.37x = 166,940,986,866.78
  5. Step 5: Solve for x
    x = 166,940,986,866.78/433,987.37
  6. Step 6: Final answer
    x = 384,667.85

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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.