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Finding the Fourth Proportional to 217,203.83, 325,703.51 and 84,146.39

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Solution

The fourth proportional to 217,203.83, 325,703.51 and 84,146.39 is: 126,179.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,203.83 : 325,703.51 = 84,146.39 : x
  2. Step 2: Convert to fraction form
    217,203.83/325,703.51 = 84,146.39/x
  3. Step 3: Cross multiply
    217,203.83x = 325,703.51 × 84,146.39
  4. Step 4: Simplify right side
    217,203.83x = 27,406,774,156.10
  5. Step 5: Solve for x
    x = 27,406,774,156.10/217,203.83
  6. Step 6: Final answer
    x = 126,179.98

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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.