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Finding the Fourth Proportional to 339,151.30, 508,726.95 and 319,797.70

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Solution

The fourth proportional to 339,151.30, 508,726.95 and 319,797.70 is: 479,696.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,151.30 : 508,726.95 = 319,797.70 : x
  2. Step 2: Convert to fraction form
    339,151.30/508,726.95 = 319,797.70/x
  3. Step 3: Cross multiply
    339,151.30x = 508,726.95 × 319,797.70
  4. Step 4: Simplify right side
    339,151.30x = 162,689,708,538.02
  5. Step 5: Solve for x
    x = 162,689,708,538.02/339,151.30
  6. Step 6: Final answer
    x = 479,696.55

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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.