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Finding the Fourth Proportional to 384,773.25, 530,987.09 and 215,023.17

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Solution

The fourth proportional to 384,773.25, 530,987.09 and 215,023.17 is: 296,731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,773.25 : 530,987.09 = 215,023.17 : x
  2. Step 2: Convert to fraction form
    384,773.25/530,987.09 = 215,023.17/x
  3. Step 3: Cross multiply
    384,773.25x = 530,987.09 × 215,023.17
  4. Step 4: Simplify right side
    384,773.25x = 114,174,527,320.88
  5. Step 5: Solve for x
    x = 114,174,527,320.88/384,773.25
  6. Step 6: Final answer
    x = 296,731.98

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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.