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Finding the Fourth Proportional to 613,415.43, 920,135.43 and 164,135.59

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Solution

The fourth proportional to 613,415.43, 920,135.43 and 164,135.59 is: 246,206.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,415.43 : 920,135.43 = 164,135.59 : x
  2. Step 2: Convert to fraction form
    613,415.43/920,135.43 = 164,135.59/x
  3. Step 3: Cross multiply
    613,415.43x = 920,135.43 × 164,135.59
  4. Step 4: Simplify right side
    613,415.43x = 151,026,969,382.62
  5. Step 5: Solve for x
    x = 151,026,969,382.62/613,415.43
  6. Step 6: Final answer
    x = 246,206.67

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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.