Home / 515,405.13-772,918.16-178,359.27

Finding the Fourth Proportional to 515,405.13, 772,918.16 and 178,359.27

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Solution

The fourth proportional to 515,405.13, 772,918.16 and 178,359.27 is: 267,473.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,405.13 : 772,918.16 = 178,359.27 : x
  2. Step 2: Convert to fraction form
    515,405.13/772,918.16 = 178,359.27/x
  3. Step 3: Cross multiply
    515,405.13x = 772,918.16 × 178,359.27
  4. Step 4: Simplify right side
    515,405.13x = 137,857,117,895.55
  5. Step 5: Solve for x
    x = 137,857,117,895.55/515,405.13
  6. Step 6: Final answer
    x = 267,473.31

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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.