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Finding the Fourth Proportional to 436,782.30, 655,266.60 and 247,331.40

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Solution

The fourth proportional to 436,782.30, 655,266.60 and 247,331.40 is: 371,049.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,782.30 : 655,266.60 = 247,331.40 : x
  2. Step 2: Convert to fraction form
    436,782.30/655,266.60 = 247,331.40/x
  3. Step 3: Cross multiply
    436,782.30x = 655,266.60 × 247,331.40
  4. Step 4: Simplify right side
    436,782.30x = 162,068,005,551.24
  5. Step 5: Solve for x
    x = 162,068,005,551.24/436,782.30
  6. Step 6: Final answer
    x = 371,049.85

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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.