Home / 239,359.30-330,323.21-137,403.39

Finding the Fourth Proportional to 239,359.30, 330,323.21 and 137,403.39

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Solution

The fourth proportional to 239,359.30, 330,323.21 and 137,403.39 is: 189,620.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,359.30 : 330,323.21 = 137,403.39 : x
  2. Step 2: Convert to fraction form
    239,359.30/330,323.21 = 137,403.39/x
  3. Step 3: Cross multiply
    239,359.30x = 330,323.21 × 137,403.39
  4. Step 4: Simplify right side
    239,359.30x = 45,387,528,849.68
  5. Step 5: Solve for x
    x = 45,387,528,849.68/239,359.30
  6. Step 6: Final answer
    x = 189,620.91

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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.