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Finding the Fourth Proportional to 400,419.18, 600,210.30 and 133,960.50

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Solution

The fourth proportional to 400,419.18, 600,210.30 and 133,960.50 is: 200,800.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,419.18 : 600,210.30 = 133,960.50 : x
  2. Step 2: Convert to fraction form
    400,419.18/600,210.30 = 133,960.50/x
  3. Step 3: Cross multiply
    400,419.18x = 600,210.30 × 133,960.50
  4. Step 4: Simplify right side
    400,419.18x = 80,404,471,893.15
  5. Step 5: Solve for x
    x = 80,404,471,893.15/400,419.18
  6. Step 6: Final answer
    x = 200,800.75

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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.