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Finding the Fourth Proportional to 523,333.08, 721,958.40 and 308,326.68

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Solution

The fourth proportional to 523,333.08, 721,958.40 and 308,326.68 is: 425,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,333.08 : 721,958.40 = 308,326.68 : x
  2. Step 2: Convert to fraction form
    523,333.08/721,958.40 = 308,326.68/x
  3. Step 3: Cross multiply
    523,333.08x = 721,958.40 × 308,326.68
  4. Step 4: Simplify right side
    523,333.08x = 222,599,036,570.11
  5. Step 5: Solve for x
    x = 222,599,036,570.11/523,333.08
  6. Step 6: Final answer
    x = 425,348.68

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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.