Home / 421,541.70-631,869.67-261,617.32

Finding the Fourth Proportional to 421,541.70, 631,869.67 and 261,617.32

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Solution

The fourth proportional to 421,541.70, 631,869.67 and 261,617.32 is: 392,151.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,541.70 : 631,869.67 = 261,617.32 : x
  2. Step 2: Convert to fraction form
    421,541.70/631,869.67 = 261,617.32/x
  3. Step 3: Cross multiply
    421,541.70x = 631,869.67 × 261,617.32
  4. Step 4: Simplify right side
    421,541.70x = 165,308,049,654.68
  5. Step 5: Solve for x
    x = 165,308,049,654.68/421,541.70
  6. Step 6: Final answer
    x = 392,151.12

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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.