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Finding the Fourth Proportional to 545,003.25, 752,104.49 and 306,539.25

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Solution

The fourth proportional to 545,003.25, 752,104.49 and 306,539.25 is: 423,024.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,003.25 : 752,104.49 = 306,539.25 : x
  2. Step 2: Convert to fraction form
    545,003.25/752,104.49 = 306,539.25/x
  3. Step 3: Cross multiply
    545,003.25x = 752,104.49 × 306,539.25
  4. Step 4: Simplify right side
    545,003.25x = 230,549,544,753.54
  5. Step 5: Solve for x
    x = 230,549,544,753.54/545,003.25
  6. Step 6: Final answer
    x = 423,024.17

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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.