Home / 326,845.18-490,092.81-139,754.62

Finding the Fourth Proportional to 326,845.18, 490,092.81 and 139,754.62

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Solution

The fourth proportional to 326,845.18, 490,092.81 and 139,754.62 is: 209,557.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,845.18 : 490,092.81 = 139,754.62 : x
  2. Step 2: Convert to fraction form
    326,845.18/490,092.81 = 139,754.62/x
  3. Step 3: Cross multiply
    326,845.18x = 490,092.81 × 139,754.62
  4. Step 4: Simplify right side
    326,845.18x = 68,492,734,426.28
  5. Step 5: Solve for x
    x = 68,492,734,426.28/326,845.18
  6. Step 6: Final answer
    x = 209,557.12

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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.