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Finding the Fourth Proportional to 445,069.47, 667,709.25 and 145,548.90

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Solution

The fourth proportional to 445,069.47, 667,709.25 and 145,548.90 is: 218,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,069.47 : 667,709.25 = 145,548.90 : x
  2. Step 2: Convert to fraction form
    445,069.47/667,709.25 = 145,548.90/x
  3. Step 3: Cross multiply
    445,069.47x = 667,709.25 × 145,548.90
  4. Step 4: Simplify right side
    445,069.47x = 97,184,346,857.33
  5. Step 5: Solve for x
    x = 97,184,346,857.33/445,069.47
  6. Step 6: Final answer
    x = 218,357.70

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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.