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Finding the Fourth Proportional to 436,856.80, 655,576.80 and 247,316.80

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Solution

The fourth proportional to 436,856.80, 655,576.80 and 247,316.80 is: 371,140.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,856.80 : 655,576.80 = 247,316.80 : x
  2. Step 2: Convert to fraction form
    436,856.80/655,576.80 = 247,316.80/x
  3. Step 3: Cross multiply
    436,856.80x = 655,576.80 × 247,316.80
  4. Step 4: Simplify right side
    436,856.80x = 162,135,156,330.24
  5. Step 5: Solve for x
    x = 162,135,156,330.24/436,856.80
  6. Step 6: Final answer
    x = 371,140.28

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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.