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Finding the Fourth Proportional to 515,600.48, 773,437.72 and 215,779.26

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Solution

The fourth proportional to 515,600.48, 773,437.72 and 215,779.26 is: 323,684.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,600.48 : 773,437.72 = 215,779.26 : x
  2. Step 2: Convert to fraction form
    515,600.48/773,437.72 = 215,779.26/x
  3. Step 3: Cross multiply
    515,600.48x = 773,437.72 × 215,779.26
  4. Step 4: Simplify right side
    515,600.48x = 166,891,818,877.69
  5. Step 5: Solve for x
    x = 166,891,818,877.69/515,600.48
  6. Step 6: Final answer
    x = 323,684.37

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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.