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Finding the Fourth Proportional to 208,317.92, 312,412.40 and 75,181.32

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Solution

The fourth proportional to 208,317.92, 312,412.40 and 75,181.32 is: 112,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,317.92 : 312,412.40 = 75,181.32 : x
  2. Step 2: Convert to fraction form
    208,317.92/312,412.40 = 75,181.32/x
  3. Step 3: Cross multiply
    208,317.92x = 312,412.40 × 75,181.32
  4. Step 4: Simplify right side
    208,317.92x = 23,487,576,240.46
  5. Step 5: Solve for x
    x = 23,487,576,240.46/208,317.92
  6. Step 6: Final answer
    x = 112,748.71

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1.5x scale

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.