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Finding the Fourth Proportional to 339,552.72, 508,935.38 and 319,869.72

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Solution

The fourth proportional to 339,552.72, 508,935.38 and 319,869.72 is: 479,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,552.72 : 508,935.38 = 319,869.72 : x
  2. Step 2: Convert to fraction form
    339,552.72/508,935.38 = 319,869.72/x
  3. Step 3: Cross multiply
    339,552.72x = 508,935.38 × 319,869.72
  4. Step 4: Simplify right side
    339,552.72x = 162,793,015,899.35
  5. Step 5: Solve for x
    x = 162,793,015,899.35/339,552.72
  6. Step 6: Final answer
    x = 479,433.70

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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.