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Finding the Fourth Proportional to 383,816.80, 575,725.20 and 347,075.20

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Solution

The fourth proportional to 383,816.80, 575,725.20 and 347,075.20 is: 520,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,816.80 : 575,725.20 = 347,075.20 : x
  2. Step 2: Convert to fraction form
    383,816.80/575,725.20 = 347,075.20/x
  3. Step 3: Cross multiply
    383,816.80x = 575,725.20 × 347,075.20
  4. Step 4: Simplify right side
    383,816.80x = 199,819,938,935.04
  5. Step 5: Solve for x
    x = 199,819,938,935.04/383,816.80
  6. Step 6: Final answer
    x = 520,612.80

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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.