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Finding the Fourth Proportional to 312,665.90, 469,026.53 and 88,028.28

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Solution

The fourth proportional to 312,665.90, 469,026.53 and 88,028.28 is: 132,050.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,665.90 : 469,026.53 = 88,028.28 : x
  2. Step 2: Convert to fraction form
    312,665.90/469,026.53 = 88,028.28/x
  3. Step 3: Cross multiply
    312,665.90x = 469,026.53 × 88,028.28
  4. Step 4: Simplify right side
    312,665.90x = 41,287,598,270.13
  5. Step 5: Solve for x
    x = 41,287,598,270.13/312,665.90
  6. Step 6: Final answer
    x = 132,050.21

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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.