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Finding the Fourth Proportional to 339,472.29, 509,303.76 and 99,591.87

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Solution

The fourth proportional to 339,472.29, 509,303.76 and 99,591.87 is: 149,415.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,472.29 : 509,303.76 = 99,591.87 : x
  2. Step 2: Convert to fraction form
    339,472.29/509,303.76 = 99,591.87/x
  3. Step 3: Cross multiply
    339,472.29x = 509,303.76 × 99,591.87
  4. Step 4: Simplify right side
    339,472.29x = 50,722,513,856.43
  5. Step 5: Solve for x
    x = 50,722,513,856.43/339,472.29
  6. Step 6: Final answer
    x = 149,415.77

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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.