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Finding the Fourth Proportional to 386,054.55, 579,158.37 and 119,803.70

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Solution

The fourth proportional to 386,054.55, 579,158.37 and 119,803.70 is: 179,729.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,054.55 : 579,158.37 = 119,803.70 : x
  2. Step 2: Convert to fraction form
    386,054.55/579,158.37 = 119,803.70/x
  3. Step 3: Cross multiply
    386,054.55x = 579,158.37 × 119,803.70
  4. Step 4: Simplify right side
    386,054.55x = 69,385,317,059.86
  5. Step 5: Solve for x
    x = 69,385,317,059.86/386,054.55
  6. Step 6: Final answer
    x = 179,729.31

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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.