Home / 345,781.20-515,035.30-329,602

Finding the Fourth Proportional to 345,781.20, 515,035.30 and 329,602

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Solution

The fourth proportional to 345,781.20, 515,035.30 and 329,602 is: 490,936.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,781.20 : 515,035.30 = 329,602 : x
  2. Step 2: Convert to fraction form
    345,781.20/515,035.30 = 329,602/x
  3. Step 3: Cross multiply
    345,781.20x = 515,035.30 × 329,602
  4. Step 4: Simplify right side
    345,781.20x = 169,756,664,950.60
  5. Step 5: Solve for x
    x = 169,756,664,950.60/345,781.20
  6. Step 6: Final answer
    x = 490,936.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.