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Finding the Fourth Proportional to 386,763.60, 579,684.60 and 162,123.60

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Solution

The fourth proportional to 386,763.60, 579,684.60 and 162,123.60 is: 242,992.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,763.60 : 579,684.60 = 162,123.60 : x
  2. Step 2: Convert to fraction form
    386,763.60/579,684.60 = 162,123.60/x
  3. Step 3: Cross multiply
    386,763.60x = 579,684.60 × 162,123.60
  4. Step 4: Simplify right side
    386,763.60x = 93,980,554,216.56
  5. Step 5: Solve for x
    x = 93,980,554,216.56/386,763.60
  6. Step 6: Final answer
    x = 242,992.24

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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.