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Finding the Fourth Proportional to 447,881.72, 670,915.38 and 207,657.32

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Solution

The fourth proportional to 447,881.72, 670,915.38 and 207,657.32 is: 311,065.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,881.72 : 670,915.38 = 207,657.32 : x
  2. Step 2: Convert to fraction form
    447,881.72/670,915.38 = 207,657.32/x
  3. Step 3: Cross multiply
    447,881.72x = 670,915.38 × 207,657.32
  4. Step 4: Simplify right side
    447,881.72x = 139,320,489,757.58
  5. Step 5: Solve for x
    x = 139,320,489,757.58/447,881.72
  6. Step 6: Final answer
    x = 311,065.36

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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.