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Finding the Fourth Proportional to 384,074.34, 529,943.45 and 220,699.28

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Solution

The fourth proportional to 384,074.34, 529,943.45 and 220,699.28 is: 304,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,074.34 : 529,943.45 = 220,699.28 : x
  2. Step 2: Convert to fraction form
    384,074.34/529,943.45 = 220,699.28/x
  3. Step 3: Cross multiply
    384,074.34x = 529,943.45 × 220,699.28
  4. Step 4: Simplify right side
    384,074.34x = 116,958,139,318.51
  5. Step 5: Solve for x
    x = 116,958,139,318.51/384,074.34
  6. Step 6: Final answer
    x = 304,519.53

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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.