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Finding the Fourth Proportional to 545,002.75, 752,103.80 and 306,538.75

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Solution

The fourth proportional to 545,002.75, 752,103.80 and 306,538.75 is: 423,023.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,002.75 : 752,103.80 = 306,538.75 : x
  2. Step 2: Convert to fraction form
    545,002.75/752,103.80 = 306,538.75/x
  3. Step 3: Cross multiply
    545,002.75x = 752,103.80 × 306,538.75
  4. Step 4: Simplify right side
    545,002.75x = 230,548,958,722.25
  5. Step 5: Solve for x
    x = 230,548,958,722.25/545,002.75
  6. Step 6: Final answer
    x = 423,023.48

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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.