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Finding the Fourth Proportional to 345,863.98, 515,357.71 and 308,134.11

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Solution

The fourth proportional to 345,863.98, 515,357.71 and 308,134.11 is: 459,137.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,863.98 : 515,357.71 = 308,134.11 : x
  2. Step 2: Convert to fraction form
    345,863.98/515,357.71 = 308,134.11/x
  3. Step 3: Cross multiply
    345,863.98x = 515,357.71 × 308,134.11
  4. Step 4: Simplify right side
    345,863.98x = 158,799,289,302.49
  5. Step 5: Solve for x
    x = 158,799,289,302.49/345,863.98
  6. Step 6: Final answer
    x = 459,137.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.