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Finding the Fourth Proportional to 385,942.81, 578,750.17 and 158,081.33

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Solution

The fourth proportional to 385,942.81, 578,750.17 and 158,081.33 is: 237,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,942.81 : 578,750.17 = 158,081.33 : x
  2. Step 2: Convert to fraction form
    385,942.81/578,750.17 = 158,081.33/x
  3. Step 3: Cross multiply
    385,942.81x = 578,750.17 × 158,081.33
  4. Step 4: Simplify right side
    385,942.81x = 91,489,596,611.33
  5. Step 5: Solve for x
    x = 91,489,596,611.33/385,942.81
  6. Step 6: Final answer
    x = 237,054.80

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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.