Home / 205,440.20-308,160.30-65,209.80

Finding the Fourth Proportional to 205,440.20, 308,160.30 and 65,209.80

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Solution

The fourth proportional to 205,440.20, 308,160.30 and 65,209.80 is: 97,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,440.20 : 308,160.30 = 65,209.80 : x
  2. Step 2: Convert to fraction form
    205,440.20/308,160.30 = 65,209.80/x
  3. Step 3: Cross multiply
    205,440.20x = 308,160.30 × 65,209.80
  4. Step 4: Simplify right side
    205,440.20x = 20,095,071,530.94
  5. Step 5: Solve for x
    x = 20,095,071,530.94/205,440.20
  6. Step 6: Final answer
    x = 97,814.70

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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.