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Finding the Fourth Proportional to 312,122.71, 468,181.09 and 98,890.03

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Solution

The fourth proportional to 312,122.71, 468,181.09 and 98,890.03 is: 148,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,122.71 : 468,181.09 = 98,890.03 : x
  2. Step 2: Convert to fraction form
    312,122.71/468,181.09 = 98,890.03/x
  3. Step 3: Cross multiply
    312,122.71x = 468,181.09 × 98,890.03
  4. Step 4: Simplify right side
    312,122.71x = 46,298,442,035.53
  5. Step 5: Solve for x
    x = 46,298,442,035.53/312,122.71
  6. Step 6: Final answer
    x = 148,334.10

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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.