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Finding the Fourth Proportional to 547,321.52, 755,295.86 and 305,607.90

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Solution

The fourth proportional to 547,321.52, 755,295.86 and 305,607.90 is: 421,734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,321.52 : 755,295.86 = 305,607.90 : x
  2. Step 2: Convert to fraction form
    547,321.52/755,295.86 = 305,607.90/x
  3. Step 3: Cross multiply
    547,321.52x = 755,295.86 × 305,607.90
  4. Step 4: Simplify right side
    547,321.52x = 230,824,381,653.29
  5. Step 5: Solve for x
    x = 230,824,381,653.29/547,321.52
  6. Step 6: Final answer
    x = 421,734.53

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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.