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Finding the Fourth Proportional to 384,074.59, 529,943.80 and 220,699.53

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Solution

The fourth proportional to 384,074.59, 529,943.80 and 220,699.53 is: 304,519.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,074.59 : 529,943.80 = 220,699.53 : x
  2. Step 2: Convert to fraction form
    384,074.59/529,943.80 = 220,699.53/x
  3. Step 3: Cross multiply
    384,074.59x = 529,943.80 × 220,699.53
  4. Step 4: Simplify right side
    384,074.59x = 116,958,347,807.78
  5. Step 5: Solve for x
    x = 116,958,347,807.78/384,074.59
  6. Step 6: Final answer
    x = 304,519.88

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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.