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Finding the Fourth Proportional to 208,389.85, 312,464.09 and 183,479.92

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Solution

The fourth proportional to 208,389.85, 312,464.09 and 183,479.92 is: 275,113.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,389.85 : 312,464.09 = 183,479.92 : x
  2. Step 2: Convert to fraction form
    208,389.85/312,464.09 = 183,479.92/x
  3. Step 3: Cross multiply
    208,389.85x = 312,464.09 × 183,479.92
  4. Step 4: Simplify right side
    208,389.85x = 57,330,885,318.67
  5. Step 5: Solve for x
    x = 57,330,885,318.67/208,389.85
  6. Step 6: Final answer
    x = 275,113.62

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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.