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Finding the Fourth Proportional to 386,989.08, 580,707.78 and 162,329.52

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Solution

The fourth proportional to 386,989.08, 580,707.78 and 162,329.52 is: 243,588.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,989.08 : 580,707.78 = 162,329.52 : x
  2. Step 2: Convert to fraction form
    386,989.08/580,707.78 = 162,329.52/x
  3. Step 3: Cross multiply
    386,989.08x = 580,707.78 × 162,329.52
  4. Step 4: Simplify right side
    386,989.08x = 94,266,015,187.67
  5. Step 5: Solve for x
    x = 94,266,015,187.67/386,989.08
  6. Step 6: Final answer
    x = 243,588.31

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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.