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Finding the Fourth Proportional to 383,788.62, 575,685.90 and 147,074.76

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Solution

The fourth proportional to 383,788.62, 575,685.90 and 147,074.76 is: 220,613.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,788.62 : 575,685.90 = 147,074.76 : x
  2. Step 2: Convert to fraction form
    383,788.62/575,685.90 = 147,074.76/x
  3. Step 3: Cross multiply
    383,788.62x = 575,685.90 × 147,074.76
  4. Step 4: Simplify right side
    383,788.62x = 84,668,865,577.88
  5. Step 5: Solve for x
    x = 84,668,865,577.88/383,788.62
  6. Step 6: Final answer
    x = 220,613.28

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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.