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Finding the Fourth Proportional to 439,206.62, 658,803.01 and 139,682.87

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Solution

The fourth proportional to 439,206.62, 658,803.01 and 139,682.87 is: 209,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,206.62 : 658,803.01 = 139,682.87 : x
  2. Step 2: Convert to fraction form
    439,206.62/658,803.01 = 139,682.87/x
  3. Step 3: Cross multiply
    439,206.62x = 658,803.01 × 139,682.87
  4. Step 4: Simplify right side
    439,206.62x = 92,023,495,201.44
  5. Step 5: Solve for x
    x = 92,023,495,201.44/439,206.62
  6. Step 6: Final answer
    x = 209,522.10

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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.