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Finding the Fourth Proportional to 383,963.80, 575,945.70 and 218,075.80

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Solution

The fourth proportional to 383,963.80, 575,945.70 and 218,075.80 is: 327,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,963.80 : 575,945.70 = 218,075.80 : x
  2. Step 2: Convert to fraction form
    383,963.80/575,945.70 = 218,075.80/x
  3. Step 3: Cross multiply
    383,963.80x = 575,945.70 × 218,075.80
  4. Step 4: Simplify right side
    383,963.80x = 125,599,819,284.06
  5. Step 5: Solve for x
    x = 125,599,819,284.06/383,963.80
  6. Step 6: Final answer
    x = 327,113.70

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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.