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Finding the Fourth Proportional to 445,070, 667,688.70 and 178,851.62

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Solution

The fourth proportional to 445,070, 667,688.70 and 178,851.62 is: 268,311.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,070 : 667,688.70 = 178,851.62 : x
  2. Step 2: Convert to fraction form
    445,070/667,688.70 = 178,851.62/x
  3. Step 3: Cross multiply
    445,070x = 667,688.70 × 178,851.62
  4. Step 4: Simplify right side
    445,070x = 119,417,205,650.69
  5. Step 5: Solve for x
    x = 119,417,205,650.69/445,070
  6. Step 6: Final answer
    x = 268,311.06

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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.