Home / 213,769.17-320,498.24-138,964.05

Finding the Fourth Proportional to 213,769.17, 320,498.24 and 138,964.05

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Solution

The fourth proportional to 213,769.17, 320,498.24 and 138,964.05 is: 208,344.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,769.17 : 320,498.24 = 138,964.05 : x
  2. Step 2: Convert to fraction form
    213,769.17/320,498.24 = 138,964.05/x
  3. Step 3: Cross multiply
    213,769.17x = 320,498.24 × 138,964.05
  4. Step 4: Simplify right side
    213,769.17x = 44,537,732,753.45
  5. Step 5: Solve for x
    x = 44,537,732,753.45/213,769.17
  6. Step 6: Final answer
    x = 208,344.98

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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.