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Finding the Fourth Proportional to 515,235.51, 772,855.25 and 215,505.84

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Solution

The fourth proportional to 515,235.51, 772,855.25 and 215,505.84 is: 323,259.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,235.51 : 772,855.25 = 215,505.84 : x
  2. Step 2: Convert to fraction form
    515,235.51/772,855.25 = 215,505.84/x
  3. Step 3: Cross multiply
    515,235.51x = 772,855.25 × 215,505.84
  4. Step 4: Simplify right side
    515,235.51x = 166,554,818,456.29
  5. Step 5: Solve for x
    x = 166,554,818,456.29/515,235.51
  6. Step 6: Final answer
    x = 323,259.59

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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.