Home / 397,976.80-596,965.20-272,005.60

Finding the Fourth Proportional to 397,976.80, 596,965.20 and 272,005.60

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Solution

The fourth proportional to 397,976.80, 596,965.20 and 272,005.60 is: 408,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,976.80 : 596,965.20 = 272,005.60 : x
  2. Step 2: Convert to fraction form
    397,976.80/596,965.20 = 272,005.60/x
  3. Step 3: Cross multiply
    397,976.80x = 596,965.20 × 272,005.60
  4. Step 4: Simplify right side
    397,976.80x = 162,377,877,405.12
  5. Step 5: Solve for x
    x = 162,377,877,405.12/397,976.80
  6. Step 6: Final answer
    x = 408,008.40

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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.