Home / 208,529.08-312,815.49-68,298.64

Finding the Fourth Proportional to 208,529.08, 312,815.49 and 68,298.64

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Solution

The fourth proportional to 208,529.08, 312,815.49 and 68,298.64 is: 102,455.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,529.08 : 312,815.49 = 68,298.64 : x
  2. Step 2: Convert to fraction form
    208,529.08/312,815.49 = 68,298.64/x
  3. Step 3: Cross multiply
    208,529.08x = 312,815.49 × 68,298.64
  4. Step 4: Simplify right side
    208,529.08x = 21,364,872,537.93
  5. Step 5: Solve for x
    x = 21,364,872,537.93/208,529.08
  6. Step 6: Final answer
    x = 102,455.12

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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.