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Finding the Fourth Proportional to 539,992.98, 745,185.63 and 298,292.43

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Solution

The fourth proportional to 539,992.98, 745,185.63 and 298,292.43 is: 411,640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,992.98 : 745,185.63 = 298,292.43 : x
  2. Step 2: Convert to fraction form
    539,992.98/745,185.63 = 298,292.43/x
  3. Step 3: Cross multiply
    539,992.98x = 745,185.63 × 298,292.43
  4. Step 4: Simplify right side
    539,992.98x = 222,283,232,373.78
  5. Step 5: Solve for x
    x = 222,283,232,373.78/539,992.98
  6. Step 6: Final answer
    x = 411,640.97

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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.