Home / 381,847.28-526,938.20-212,070.40

Finding the Fourth Proportional to 381,847.28, 526,938.20 and 212,070.40

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Solution

The fourth proportional to 381,847.28, 526,938.20 and 212,070.40 is: 292,651.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,847.28 : 526,938.20 = 212,070.40 : x
  2. Step 2: Convert to fraction form
    381,847.28/526,938.20 = 212,070.40/x
  3. Step 3: Cross multiply
    381,847.28x = 526,938.20 × 212,070.40
  4. Step 4: Simplify right side
    381,847.28x = 111,747,994,849.28
  5. Step 5: Solve for x
    x = 111,747,994,849.28/381,847.28
  6. Step 6: Final answer
    x = 292,651.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.