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Finding the Fourth Proportional to 385,366.65, 578,105.37 and 119,147.93

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Solution

The fourth proportional to 385,366.65, 578,105.37 and 119,147.93 is: 178,739.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,366.65 : 578,105.37 = 119,147.93 : x
  2. Step 2: Convert to fraction form
    385,366.65/578,105.37 = 119,147.93/x
  3. Step 3: Cross multiply
    385,366.65x = 578,105.37 × 119,147.93
  4. Step 4: Simplify right side
    385,366.65x = 68,880,056,414.25
  5. Step 5: Solve for x
    x = 68,880,056,414.25/385,366.65
  6. Step 6: Final answer
    x = 178,739.02

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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.