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Finding the Fourth Proportional to 454,688.48, 682,132.62 and 139,169.72

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Solution

The fourth proportional to 454,688.48, 682,132.62 and 139,169.72 is: 208,785.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,688.48 : 682,132.62 = 139,169.72 : x
  2. Step 2: Convert to fraction form
    454,688.48/682,132.62 = 139,169.72/x
  3. Step 3: Cross multiply
    454,688.48x = 682,132.62 × 139,169.72
  4. Step 4: Simplify right side
    454,688.48x = 94,932,205,728.27
  5. Step 5: Solve for x
    x = 94,932,205,728.27/454,688.48
  6. Step 6: Final answer
    x = 208,785.16

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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.