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Finding the Fourth Proportional to 326,359.65, 489,428.60 and 113,077.79

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Solution

The fourth proportional to 326,359.65, 489,428.60 and 113,077.79 is: 169,578.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,359.65 : 489,428.60 = 113,077.79 : x
  2. Step 2: Convert to fraction form
    326,359.65/489,428.60 = 113,077.79/x
  3. Step 3: Cross multiply
    326,359.65x = 489,428.60 × 113,077.79
  4. Step 4: Simplify right side
    326,359.65x = 55,343,501,438.26
  5. Step 5: Solve for x
    x = 55,343,501,438.26/326,359.65
  6. Step 6: Final answer
    x = 169,578.26

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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.