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Finding the Fourth Proportional to 515,488.35, 773,302.80 and 299,448.60

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Solution

The fourth proportional to 515,488.35, 773,302.80 and 299,448.60 is: 449,213.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,488.35 : 773,302.80 = 299,448.60 : x
  2. Step 2: Convert to fraction form
    515,488.35/773,302.80 = 299,448.60/x
  3. Step 3: Cross multiply
    515,488.35x = 773,302.80 × 299,448.60
  4. Step 4: Simplify right side
    515,488.35x = 231,564,437,374.73
  5. Step 5: Solve for x
    x = 231,564,437,374.73/515,488.35
  6. Step 6: Final answer
    x = 449,213.71

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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.