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Finding the Fourth Proportional to 439,698.27, 659,572.92 and 124,128.75

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Solution

The fourth proportional to 439,698.27, 659,572.92 and 124,128.75 is: 186,200.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,698.27 : 659,572.92 = 124,128.75 : x
  2. Step 2: Convert to fraction form
    439,698.27/659,572.92 = 124,128.75/x
  3. Step 3: Cross multiply
    439,698.27x = 659,572.92 × 124,128.75
  4. Step 4: Simplify right side
    439,698.27x = 81,871,962,093.45
  5. Step 5: Solve for x
    x = 81,871,962,093.45/439,698.27
  6. Step 6: Final answer
    x = 186,200.33

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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.