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Finding the Fourth Proportional to 288,755.90, 432,843.08 and 120,369.45

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Solution

The fourth proportional to 288,755.90, 432,843.08 and 120,369.45 is: 180,432.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,755.90 : 432,843.08 = 120,369.45 : x
  2. Step 2: Convert to fraction form
    288,755.90/432,843.08 = 120,369.45/x
  3. Step 3: Cross multiply
    288,755.90x = 432,843.08 × 120,369.45
  4. Step 4: Simplify right side
    288,755.90x = 52,101,082,874.06
  5. Step 5: Solve for x
    x = 52,101,082,874.06/288,755.90
  6. Step 6: Final answer
    x = 180,432.97

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1.5x scale

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.