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Finding the Fourth Proportional to 280,096.38, 418,358.58 and 253,401.21

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Solution

The fourth proportional to 280,096.38, 418,358.58 and 253,401.21 is: 378,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,096.38 : 418,358.58 = 253,401.21 : x
  2. Step 2: Convert to fraction form
    280,096.38/418,358.58 = 253,401.21/x
  3. Step 3: Cross multiply
    280,096.38x = 418,358.58 × 253,401.21
  4. Step 4: Simplify right side
    280,096.38x = 106,012,570,385.88
  5. Step 5: Solve for x
    x = 106,012,570,385.88/280,096.38
  6. Step 6: Final answer
    x = 378,486.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.