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Finding the Fourth Proportional to 545,003.75, 752,105.18 and 306,539.75

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Solution

The fourth proportional to 545,003.75, 752,105.18 and 306,539.75 is: 423,024.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,003.75 : 752,105.18 = 306,539.75 : x
  2. Step 2: Convert to fraction form
    545,003.75/752,105.18 = 306,539.75/x
  3. Step 3: Cross multiply
    545,003.75x = 752,105.18 × 306,539.75
  4. Step 4: Simplify right side
    545,003.75x = 230,550,133,850.91
  5. Step 5: Solve for x
    x = 230,550,133,850.91/545,003.75
  6. Step 6: Final answer
    x = 423,024.86

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1.5x scale

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.