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Finding the Fourth Proportional to 386,491.60, 579,276.60 and 161,851.60

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Solution

The fourth proportional to 386,491.60, 579,276.60 and 161,851.60 is: 242,584.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,491.60 : 579,276.60 = 161,851.60 : x
  2. Step 2: Convert to fraction form
    386,491.60/579,276.60 = 161,851.60/x
  3. Step 3: Cross multiply
    386,491.60x = 579,276.60 × 161,851.60
  4. Step 4: Simplify right side
    386,491.60x = 93,756,844,552.56
  5. Step 5: Solve for x
    x = 93,756,844,552.56/386,491.60
  6. Step 6: Final answer
    x = 242,584.43

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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.