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Finding the Fourth Proportional to 548,707.63, 757,245.95 and 306,975.79

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Solution

The fourth proportional to 548,707.63, 757,245.95 and 306,975.79 is: 423,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,707.63 : 757,245.95 = 306,975.79 : x
  2. Step 2: Convert to fraction form
    548,707.63/757,245.95 = 306,975.79/x
  3. Step 3: Cross multiply
    548,707.63x = 757,245.95 × 306,975.79
  4. Step 4: Simplify right side
    548,707.63x = 232,456,173,725.55
  5. Step 5: Solve for x
    x = 232,456,173,725.55/548,707.63
  6. Step 6: Final answer
    x = 423,643.05

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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.