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Finding the Fourth Proportional to 402,610.10, 603,915.15 and 269,899.70

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Solution

The fourth proportional to 402,610.10, 603,915.15 and 269,899.70 is: 404,849.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,610.10 : 603,915.15 = 269,899.70 : x
  2. Step 2: Convert to fraction form
    402,610.10/603,915.15 = 269,899.70/x
  3. Step 3: Cross multiply
    402,610.10x = 603,915.15 × 269,899.70
  4. Step 4: Simplify right side
    402,610.10x = 162,996,517,810.46
  5. Step 5: Solve for x
    x = 162,996,517,810.46/402,610.10
  6. Step 6: Final answer
    x = 404,849.55

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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.