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Finding the Fourth Proportional to 383,679.88, 575,519.01 and 103,197.40

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Solution

The fourth proportional to 383,679.88, 575,519.01 and 103,197.40 is: 154,795.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,679.88 : 575,519.01 = 103,197.40 : x
  2. Step 2: Convert to fraction form
    383,679.88/575,519.01 = 103,197.40/x
  3. Step 3: Cross multiply
    383,679.88x = 575,519.01 × 103,197.40
  4. Step 4: Simplify right side
    383,679.88x = 59,392,065,482.57
  5. Step 5: Solve for x
    x = 59,392,065,482.57/383,679.88
  6. Step 6: Final answer
    x = 154,795.88

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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.