Home / 319,444.80-440,975.52-206,322.72

Finding the Fourth Proportional to 319,444.80, 440,975.52 and 206,322.72

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Solution

The fourth proportional to 319,444.80, 440,975.52 and 206,322.72 is: 284,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,444.80 : 440,975.52 = 206,322.72 : x
  2. Step 2: Convert to fraction form
    319,444.80/440,975.52 = 206,322.72/x
  3. Step 3: Cross multiply
    319,444.80x = 440,975.52 × 206,322.72
  4. Step 4: Simplify right side
    319,444.80x = 90,983,268,739.81
  5. Step 5: Solve for x
    x = 90,983,268,739.81/319,444.80
  6. Step 6: Final answer
    x = 284,816.87

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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.