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Finding the Fourth Proportional to 613,647.94, 920,464.60 and 158,236.78

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Solution

The fourth proportional to 613,647.94, 920,464.60 and 158,236.78 is: 237,353.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,647.94 : 920,464.60 = 158,236.78 : x
  2. Step 2: Convert to fraction form
    613,647.94/920,464.60 = 158,236.78/x
  3. Step 3: Cross multiply
    613,647.94x = 920,464.60 × 158,236.78
  4. Step 4: Simplify right side
    613,647.94x = 145,651,354,407.99
  5. Step 5: Solve for x
    x = 145,651,354,407.99/613,647.94
  6. Step 6: Final answer
    x = 237,353.29

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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.