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Finding the Fourth Proportional to 215,771.65, 297,753.98 and 120,259.89

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Solution

The fourth proportional to 215,771.65, 297,753.98 and 120,259.89 is: 165,952.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,771.65 : 297,753.98 = 120,259.89 : x
  2. Step 2: Convert to fraction form
    215,771.65/297,753.98 = 120,259.89/x
  3. Step 3: Cross multiply
    215,771.65x = 297,753.98 × 120,259.89
  4. Step 4: Simplify right side
    215,771.65x = 35,807,860,280.56
  5. Step 5: Solve for x
    x = 35,807,860,280.56/215,771.65
  6. Step 6: Final answer
    x = 165,952.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.