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Finding the Fourth Proportional to 384,806.58, 531,023.90 and 215,073.51

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Solution

The fourth proportional to 384,806.58, 531,023.90 and 215,073.51 is: 296,796.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,806.58 : 531,023.90 = 215,073.51 : x
  2. Step 2: Convert to fraction form
    384,806.58/531,023.90 = 215,073.51/x
  3. Step 3: Cross multiply
    384,806.58x = 531,023.90 × 215,073.51
  4. Step 4: Simplify right side
    384,806.58x = 114,209,172,991.52
  5. Step 5: Solve for x
    x = 114,209,172,991.52/384,806.58
  6. Step 6: Final answer
    x = 296,796.31

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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.