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Finding the Fourth Proportional to 282,399.40, 389,859.78 and 174,917.80

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Solution

The fourth proportional to 282,399.40, 389,859.78 and 174,917.80 is: 241,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,399.40 : 389,859.78 = 174,917.80 : x
  2. Step 2: Convert to fraction form
    282,399.40/389,859.78 = 174,917.80/x
  3. Step 3: Cross multiply
    282,399.40x = 389,859.78 × 174,917.80
  4. Step 4: Simplify right side
    282,399.40x = 68,193,415,026.08
  5. Step 5: Solve for x
    x = 68,193,415,026.08/282,399.40
  6. Step 6: Final answer
    x = 241,478.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.