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Finding the Fourth Proportional to 393,085.80, 589,628.70 and 366,841.80

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Solution

The fourth proportional to 393,085.80, 589,628.70 and 366,841.80 is: 550,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,085.80 : 589,628.70 = 366,841.80 : x
  2. Step 2: Convert to fraction form
    393,085.80/589,628.70 = 366,841.80/x
  3. Step 3: Cross multiply
    393,085.80x = 589,628.70 × 366,841.80
  4. Step 4: Simplify right side
    393,085.80x = 216,300,453,639.66
  5. Step 5: Solve for x
    x = 216,300,453,639.66/393,085.80
  6. Step 6: Final answer
    x = 550,262.70

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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.