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Finding the Fourth Proportional to 528,058.23, 728,689.83 and 310,233.03

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Solution

The fourth proportional to 528,058.23, 728,689.83 and 310,233.03 is: 428,103.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,058.23 : 728,689.83 = 310,233.03 : x
  2. Step 2: Convert to fraction form
    528,058.23/728,689.83 = 310,233.03/x
  3. Step 3: Cross multiply
    528,058.23x = 728,689.83 × 310,233.03
  4. Step 4: Simplify right side
    528,058.23x = 226,063,653,891.09
  5. Step 5: Solve for x
    x = 226,063,653,891.09/528,058.23
  6. Step 6: Final answer
    x = 428,103.65

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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.