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Finding the Fourth Proportional to 288,934.60, 433,401.90 and 271,438.60

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Solution

The fourth proportional to 288,934.60, 433,401.90 and 271,438.60 is: 407,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,934.60 : 433,401.90 = 271,438.60 : x
  2. Step 2: Convert to fraction form
    288,934.60/433,401.90 = 271,438.60/x
  3. Step 3: Cross multiply
    288,934.60x = 433,401.90 × 271,438.60
  4. Step 4: Simplify right side
    288,934.60x = 117,642,004,973.34
  5. Step 5: Solve for x
    x = 117,642,004,973.34/288,934.60
  6. Step 6: Final answer
    x = 407,157.90

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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.