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Finding the Fourth Proportional to 440,363.35, 660,650.12 and 156,078.75

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Solution

The fourth proportional to 440,363.35, 660,650.12 and 156,078.75 is: 234,155.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,363.35 : 660,650.12 = 156,078.75 : x
  2. Step 2: Convert to fraction form
    440,363.35/660,650.12 = 156,078.75/x
  3. Step 3: Cross multiply
    440,363.35x = 660,650.12 × 156,078.75
  4. Step 4: Simplify right side
    440,363.35x = 103,113,444,361.08
  5. Step 5: Solve for x
    x = 103,113,444,361.08/440,363.35
  6. Step 6: Final answer
    x = 234,155.37

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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.