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Finding the Fourth Proportional to 433,359.45, 649,940.76 and 208,605.15

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Solution

The fourth proportional to 433,359.45, 649,940.76 and 208,605.15 is: 312,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,359.45 : 649,940.76 = 208,605.15 : x
  2. Step 2: Convert to fraction form
    433,359.45/649,940.76 = 208,605.15/x
  3. Step 3: Cross multiply
    433,359.45x = 649,940.76 × 208,605.15
  4. Step 4: Simplify right side
    433,359.45x = 135,580,989,730.91
  5. Step 5: Solve for x
    x = 135,580,989,730.91/433,359.45
  6. Step 6: Final answer
    x = 312,860.35

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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.