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Finding the Fourth Proportional to 454,937.72, 682,381.96 and 139,395.54

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Solution

The fourth proportional to 454,937.72, 682,381.96 and 139,395.54 is: 209,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,937.72 : 682,381.96 = 139,395.54 : x
  2. Step 2: Convert to fraction form
    454,937.72/682,381.96 = 139,395.54/x
  3. Step 3: Cross multiply
    454,937.72x = 682,381.96 × 139,395.54
  4. Step 4: Simplify right side
    454,937.72x = 95,121,001,800.46
  5. Step 5: Solve for x
    x = 95,121,001,800.46/454,937.72
  6. Step 6: Final answer
    x = 209,085.77

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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.