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Finding the Fourth Proportional to 390,299.52, 586,383.36 and 250,331.52

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Solution

The fourth proportional to 390,299.52, 586,383.36 and 250,331.52 is: 376,096.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,299.52 : 586,383.36 = 250,331.52 : x
  2. Step 2: Convert to fraction form
    390,299.52/586,383.36 = 250,331.52/x
  3. Step 3: Cross multiply
    390,299.52x = 586,383.36 × 250,331.52
  4. Step 4: Simplify right side
    390,299.52x = 146,790,237,811.51
  5. Step 5: Solve for x
    x = 146,790,237,811.51/390,299.52
  6. Step 6: Final answer
    x = 376,096.38

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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.