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Finding the Fourth Proportional to 421,892.67, 582,010.52 and 260,689.71

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Solution

The fourth proportional to 421,892.67, 582,010.52 and 260,689.71 is: 359,627.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,892.67 : 582,010.52 = 260,689.71 : x
  2. Step 2: Convert to fraction form
    421,892.67/582,010.52 = 260,689.71/x
  3. Step 3: Cross multiply
    421,892.67x = 582,010.52 × 260,689.71
  4. Step 4: Simplify right side
    421,892.67x = 151,724,152,372.30
  5. Step 5: Solve for x
    x = 151,724,152,372.30/421,892.67
  6. Step 6: Final answer
    x = 359,627.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.