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Finding the Fourth Proportional to 384,773.73, 530,986.91 and 215,007.86

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Solution

The fourth proportional to 384,773.73, 530,986.91 and 215,007.86 is: 296,710.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,773.73 : 530,986.91 = 215,007.86 : x
  2. Step 2: Convert to fraction form
    384,773.73/530,986.91 = 215,007.86/x
  3. Step 3: Cross multiply
    384,773.73x = 530,986.91 × 215,007.86
  4. Step 4: Simplify right side
    384,773.73x = 114,166,355,477.14
  5. Step 5: Solve for x
    x = 114,166,355,477.14/384,773.73
  6. Step 6: Final answer
    x = 296,710.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.