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Finding the Fourth Proportional to 400,936.10, 601,404.15 and 248,720.90

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Solution

The fourth proportional to 400,936.10, 601,404.15 and 248,720.90 is: 373,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,936.10 : 601,404.15 = 248,720.90 : x
  2. Step 2: Convert to fraction form
    400,936.10/601,404.15 = 248,720.90/x
  3. Step 3: Cross multiply
    400,936.10x = 601,404.15 × 248,720.90
  4. Step 4: Simplify right side
    400,936.10x = 149,581,781,451.74
  5. Step 5: Solve for x
    x = 149,581,781,451.74/400,936.10
  6. Step 6: Final answer
    x = 373,081.35

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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.