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Finding the Fourth Proportional to 445,061.59, 667,697.39 and 145,541

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Solution

The fourth proportional to 445,061.59, 667,697.39 and 145,541 is: 218,345.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,061.59 : 667,697.39 = 145,541 : x
  2. Step 2: Convert to fraction form
    445,061.59/667,697.39 = 145,541/x
  3. Step 3: Cross multiply
    445,061.59x = 667,697.39 × 145,541
  4. Step 4: Simplify right side
    445,061.59x = 97,177,345,837.99
  5. Step 5: Solve for x
    x = 97,177,345,837.99/445,061.59
  6. Step 6: Final answer
    x = 218,345.84

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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.