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Finding the Fourth Proportional to 439,626.10, 659,439.15 and 140,104.30

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Solution

The fourth proportional to 439,626.10, 659,439.15 and 140,104.30 is: 210,156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,626.10 : 659,439.15 = 140,104.30 : x
  2. Step 2: Convert to fraction form
    439,626.10/659,439.15 = 140,104.30/x
  3. Step 3: Cross multiply
    439,626.10x = 659,439.15 × 140,104.30
  4. Step 4: Simplify right side
    439,626.10x = 92,390,260,503.35
  5. Step 5: Solve for x
    x = 92,390,260,503.35/439,626.10
  6. Step 6: Final answer
    x = 210,156.45

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1.5x scale

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.