Home / 259,970.28-389,969.33-72,996.36

Finding the Fourth Proportional to 259,970.28, 389,969.33 and 72,996.36

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Solution

The fourth proportional to 259,970.28, 389,969.33 and 72,996.36 is: 109,498.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,970.28 : 389,969.33 = 72,996.36 : x
  2. Step 2: Convert to fraction form
    259,970.28/389,969.33 = 72,996.36/x
  3. Step 3: Cross multiply
    259,970.28x = 389,969.33 × 72,996.36
  4. Step 4: Simplify right side
    259,970.28x = 28,466,341,236.66
  5. Step 5: Solve for x
    x = 28,466,341,236.66/259,970.28
  6. Step 6: Final answer
    x = 109,498.44

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1.5x scale

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.