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Finding the Fourth Proportional to 215,807.66, 323,804.76 and 115,851.12

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Solution

The fourth proportional to 215,807.66, 323,804.76 and 115,851.12 is: 173,826.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,807.66 : 323,804.76 = 115,851.12 : x
  2. Step 2: Convert to fraction form
    215,807.66/323,804.76 = 115,851.12/x
  3. Step 3: Cross multiply
    215,807.66x = 323,804.76 × 115,851.12
  4. Step 4: Simplify right side
    215,807.66x = 37,513,144,107.33
  5. Step 5: Solve for x
    x = 37,513,144,107.33/215,807.66
  6. Step 6: Final answer
    x = 173,826.75

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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.