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Finding the Fourth Proportional to 267,934.40, 401,210.40 and 212,638.40

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Solution

The fourth proportional to 267,934.40, 401,210.40 and 212,638.40 is: 318,409.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,934.40 : 401,210.40 = 212,638.40 : x
  2. Step 2: Convert to fraction form
    267,934.40/401,210.40 = 212,638.40/x
  3. Step 3: Cross multiply
    267,934.40x = 401,210.40 × 212,638.40
  4. Step 4: Simplify right side
    267,934.40x = 85,312,737,519.36
  5. Step 5: Solve for x
    x = 85,312,737,519.36/267,934.40
  6. Step 6: Final answer
    x = 318,409.05

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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.