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Finding the Fourth Proportional to 547,507.66, 755,485.86 and 305,759.40

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Solution

The fourth proportional to 547,507.66, 755,485.86 and 305,759.40 is: 421,906.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,507.66 : 755,485.86 = 305,759.40 : x
  2. Step 2: Convert to fraction form
    547,507.66/755,485.86 = 305,759.40/x
  3. Step 3: Cross multiply
    547,507.66x = 755,485.86 × 305,759.40
  4. Step 4: Simplify right side
    547,507.66x = 230,996,903,262.08
  5. Step 5: Solve for x
    x = 230,996,903,262.08/547,507.66
  6. Step 6: Final answer
    x = 421,906.25

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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.