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Finding the Fourth Proportional to 273,020.78, 409,529.55 and 70,616.90

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Solution

The fourth proportional to 273,020.78, 409,529.55 and 70,616.90 is: 105,924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,020.78 : 409,529.55 = 70,616.90 : x
  2. Step 2: Convert to fraction form
    273,020.78/409,529.55 = 70,616.90/x
  3. Step 3: Cross multiply
    273,020.78x = 409,529.55 × 70,616.90
  4. Step 4: Simplify right side
    273,020.78x = 28,919,707,279.40
  5. Step 5: Solve for x
    x = 28,919,707,279.40/273,020.78
  6. Step 6: Final answer
    x = 105,924.93

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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.