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Finding the Fourth Proportional to 445,212.66, 666,711.18 and 311,466.66

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Solution

The fourth proportional to 445,212.66, 666,711.18 and 311,466.66 is: 466,424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,212.66 : 666,711.18 = 311,466.66 : x
  2. Step 2: Convert to fraction form
    445,212.66/666,711.18 = 311,466.66/x
  3. Step 3: Cross multiply
    445,212.66x = 666,711.18 × 311,466.66
  4. Step 4: Simplify right side
    445,212.66x = 207,658,304,419.26
  5. Step 5: Solve for x
    x = 207,658,304,419.26/445,212.66
  6. Step 6: Final answer
    x = 466,424.98

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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.