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Finding the Fourth Proportional to 454,683.70, 682,000.98 and 139,140.64

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Solution

The fourth proportional to 454,683.70, 682,000.98 and 139,140.64 is: 208,703.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,683.70 : 682,000.98 = 139,140.64 : x
  2. Step 2: Convert to fraction form
    454,683.70/682,000.98 = 139,140.64/x
  3. Step 3: Cross multiply
    454,683.70x = 682,000.98 × 139,140.64
  4. Step 4: Simplify right side
    454,683.70x = 94,894,052,837.83
  5. Step 5: Solve for x
    x = 94,894,052,837.83/454,683.70
  6. Step 6: Final answer
    x = 208,703.44

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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.