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Finding the Fourth Proportional to 383,478.60, 575,217.90 and 271,504.20

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Solution

The fourth proportional to 383,478.60, 575,217.90 and 271,504.20 is: 407,256.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,478.60 : 575,217.90 = 271,504.20 : x
  2. Step 2: Convert to fraction form
    383,478.60/575,217.90 = 271,504.20/x
  3. Step 3: Cross multiply
    383,478.60x = 575,217.90 × 271,504.20
  4. Step 4: Simplify right side
    383,478.60x = 156,174,075,765.18
  5. Step 5: Solve for x
    x = 156,174,075,765.18/383,478.60
  6. Step 6: Final answer
    x = 407,256.30

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1.5x scale

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.