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Finding the Fourth Proportional to 307,688.34, 461,528.79 and 79,963.79

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Solution

The fourth proportional to 307,688.34, 461,528.79 and 79,963.79 is: 119,944.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,688.34 : 461,528.79 = 79,963.79 : x
  2. Step 2: Convert to fraction form
    307,688.34/461,528.79 = 79,963.79/x
  3. Step 3: Cross multiply
    307,688.34x = 461,528.79 × 79,963.79
  4. Step 4: Simplify right side
    307,688.34x = 36,905,588,934.87
  5. Step 5: Solve for x
    x = 36,905,588,934.87/307,688.34
  6. Step 6: Final answer
    x = 119,944.71

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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.