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Finding the Fourth Proportional to 393,000.27, 589,073.87 and 258,007.70

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Solution

The fourth proportional to 393,000.27, 589,073.87 and 258,007.70 is: 386,731.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,000.27 : 589,073.87 = 258,007.70 : x
  2. Step 2: Convert to fraction form
    393,000.27/589,073.87 = 258,007.70/x
  3. Step 3: Cross multiply
    393,000.27x = 589,073.87 × 258,007.70
  4. Step 4: Simplify right side
    393,000.27x = 151,985,590,093.39
  5. Step 5: Solve for x
    x = 151,985,590,093.39/393,000.27
  6. Step 6: Final answer
    x = 386,731.52

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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.