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Finding the Fourth Proportional to 447,880.72, 670,913.88 and 207,656.32

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Solution

The fourth proportional to 447,880.72, 670,913.88 and 207,656.32 is: 311,063.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,880.72 : 670,913.88 = 207,656.32 : x
  2. Step 2: Convert to fraction form
    447,880.72/670,913.88 = 207,656.32/x
  3. Step 3: Cross multiply
    447,880.72x = 670,913.88 × 207,656.32
  4. Step 4: Simplify right side
    447,880.72x = 139,319,507,357.72
  5. Step 5: Solve for x
    x = 139,319,507,357.72/447,880.72
  6. Step 6: Final answer
    x = 311,063.86

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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.