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Finding the Fourth Proportional to 435,997.98, 653,990.49 and 120,447.90

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Solution

The fourth proportional to 435,997.98, 653,990.49 and 120,447.90 is: 180,670.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,997.98 : 653,990.49 = 120,447.90 : x
  2. Step 2: Convert to fraction form
    435,997.98/653,990.49 = 120,447.90/x
  3. Step 3: Cross multiply
    435,997.98x = 653,990.49 × 120,447.90
  4. Step 4: Simplify right side
    435,997.98x = 78,771,781,140.47
  5. Step 5: Solve for x
    x = 78,771,781,140.47/435,997.98
  6. Step 6: Final answer
    x = 180,670.06

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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.